OMS manufactures Ray® Pressure Snubbers in-house, covering center-joint and solid-body designs that shield gauges and transmitters from pulsation and spikes. A self-cleaning piston/orifice module provides tunable damping via three interchangeable inserts. Standard NPT sizes (1/8–1/2 in) and multiple metals are offered. Production uses defense-grade inspection and calibrated measurement, with standard service to 20,000 psi and special builds to 60,000 psi.

Ray® Pressure Snubbers in brass, black oxide steel, and stainless steel for protecting gauges and sensors from pressure spikes.

Protective inline devices installed at the instrument port (gauges, transmitters) to attenuate fast pressure spikes and pulsations using porous-sintered media, micro-orifice labyrinths, or spring/piston elements—improving readability and extending instrument life.

Instrumentation Pressure Snubbers

Supports high volume production demands, ensuring scalability and competitive cost for large-scale orders.

Meets the needs of medium volume production, offering cost efficiency for expanding product lines.

Designed for prototyping and small batch runs, allowing for rapid iteration and testing.

Optimized for low volume production, ideal for market introduction and specialized products.

Design-for-manufacturability and design-for-assembly consulting evaluates product designs for optimal manufacturability, assembly cost reduction and quality control. Experts deliver actionable reports on feature simplification, material selection, draft angles and assembly gauge strategies to reduce cycle times and scrap rates.

DFM / DFA Consulting

Prototyping is the creation of preliminary parts or models that simulate the form, fit, and function of a product prior to mass production. It is used to validate design intent, test material performance, assess manufacturability, and gather stakeholder feedback. Prototyping methods include subtractive (e.g., CNC machining), additive (e.g., 3D printing), and formative (e.g., soft tooling or urethane casting) approaches depending on the functional and aesthetic requirements of the part.

Prototyping

Assembly & Integration Services encompasses mechanical fastening, ultrasonic welding, heat staking, electronics and hardware integration, sub-assembly kitting, and packaging services to deliver complete assemblies or kits ready for immediate installation or shipment.

Assembly & Integration Services

Ray® Pressure Snubbers

OMS provides end-to-end CNC machining centered on precision turning and 3-axis vertical milling for high-accuracy metal components. Sliding-head (Swiss) lathes handle small-diameter, long features with multi-axis live tooling, while fixed-head (chucking) lathes cover larger diameters and heavier cuts. Vertical machining centers support drilling, tapping, and prismatic features. Process control emphasizes close tolerances, fine surface finishes, and defense-grade inspection with calibrated metrology, enabling reliable prototype-to-production supply.

CNC Machining is subtractive manufacturing performed on computer-numerically controlled machine tools. Toolpaths generated from CAM drive multi-axis milling, turning, and mill-turn equipment to remove material accurately and repeatably. The approach enables tight tolerances, stable process capability, and scalable automation for prototypes through production across metals and engineering plastics.

CNC Machining

Scalable output via bar-feed and parallel machines.

Quick-turn CNC prototypes for fit/function.

Swiss Machining is a high-precision CNC machining process designed for producing small, complex parts with tight tolerances. It is typically performed on Swiss-type lathes, which utilize a sliding headstock and a guide bushing to minimize deflection and enhance precision during various machining operations, including turning, milling, and drilling. Key features include high precision and accuracy, capability for multiple operations, and minimal tool deflection. Common applications include medical devices, aerospace components, precision instruments, and electronics parts.

Swiss Machining

Turning on rigid, non-sliding headstock CNC lathes using 2-/3-/6-jaw chucks or collet chucks—optimized for slugs and saw-cut blanks. Supports OD/ID turning, facing, grooving, threading, and drilling; often with live tooling and tailstock support for concentricity and stiffness.

Fixed-Headstock (Chucking) CNC Turning

3-Axis Vertical Machining uses a vertical-spindle CNC mill with linear X-, Y-, and Z-motions to produce prismatic parts, slots, pockets, drilled holes, and 2.5-D contours. Tool changers, rigid tapping, and on-board probing enable accurate, repeatable machining of small- to mid-sized components with positional accuracy to ±0.010 mm and surface finishes to Ra ≤ 0.8 µm.

3-Axis Vertical Machining

Drilling is a versatile machining process used across various manufacturing methods, including CNC milling and turning. It involves creating precise holes in a material using a drill bit. This operation is vital for achieving accurate hole placement with varying diameters and depths. Drilling is known for its ability to produce clean, straight cylindrical holes and is utilized across diverse materials like metals, plastics, and wood.

Drilling

Tapping is a process in CNC milling used to create internal threads within a hole, allowing for the insertion of a threaded bolt or screw. This process requires precision to ensure thread integrity and alignment. Tapping is widely used across various industries, particularly in assembly and mechanical components where threaded fastening is essential.

Tapping

Swiss CNC Turning & Precision Milling

OMS operates a defense-grade quality system centered on dimensional inspection, calibrated measurement management, acceptance sampling, and a MIL-I-45208A-compliant inspection system. Core metrology includes vision measurement (Micro-Vu), optical comparators, surface roughness measurement, and a full suite of gauges (thread/pin/plug, micrometers, bore gauges). Calibration is controlled per ISO 10012-1 with documented traceability, while lot acceptance follows ANSI/ASQ Z1.4 plans. The program supports first-article and production inspection, gage R&R/MSA, and controlled environmental conditions to ensure repeatable, auditable results.

Inspection & Quality Control (IQC) comprises the metrology, verification, and documentation activities that ensure parts conform to drawing/CAD requirements, customer specifications, and regulatory standards. IQC spans incoming, in-process, and final inspection and leverages coordinate metrology (CMMs and portable arms), laser/structured-light scanning, optical comparators and vision systems, surface-form metrology (profilometers, roundness/contour testers), nondestructive testing (NDT), and statistical process control (SPC). Results are captured in traceable reports (e.g., AS9102 FAIR, PPAP) tied to calibrated gauges and controlled environmental conditions.

Inspection & Quality Control

Establishes and maintains a metrology program that calibrates dimensional gauges, torque wrenches, force and pressure transducers, and electronic inspection devices traceable to NIST or equivalent standards. Includes periodic gauge repeatability & reproducibility (Gage R&R) studies to verify measurement system capability and ensure Cp/Cpk compliance for AS9100, ISO 9001, and IATF 16949 quality systems.

Gauge Calibration & Gage R&R Management

Lot-acceptance inspection using statistically defined sampling plans (single, double, or multiple) with AQL-based normal/tightened/reduced switching rules to control outgoing quality risk and document accept/reject decisions.

Acceptance Sampling (ANSI/ASQ Z1.4 / ISO 2859-1)

Provision and maintenance of a documented inspection system compliant with MIL-I-45208A, covering inspection planning, control of measuring equipment, sampling, nonconformance control, records, and periodic audits for defense/aerospace work.

MIL-I-45208A-Compliant Inspection System

Dimensional Inspection verifies that a part’s physical dimensions match design tolerances. Tools include calipers, micrometers, and CMMs, ensuring geometric accuracy of length, width, height, angles, and more.

Dimensional Inspection

Quality Management & Inspection

OMS augments core machining with secondary operations and value-added services to deliver ready-for-assembly components. Services include DFM/DFA consulting, rapid prototyping, assembly and sub-assembly with hydraulic press-fit operations, precision centerless grinding (thru-feed and infeed) up to 1.000 in OD, manual tool-room machining for one-off tasks, and production saw cutting. These services are integrated with defense-grade inspection, documentation, and logistics to compress lead time, reduce vendor count, and maintain specification conformance from prototype through production.

Secondary operations & value-added services encompass in-line or post-process tasks—deburring, tapping, assembly, labeling, special cleaning or final customization—that manufacturers perform in-house but typically do not sell as stand-alone services. This catch-all pillar groups low-visibility steps so buyers understand a supplier’s complete in-house capabilities without cluttering the primary taxonomy.

Secondary Operations & Value-Added Services

Scalable via parallel ops and standardized work instructions.

Economical batches aligned with machining throughput.

Rapid support for NPI and engineering trials.

Flexible scheduling for pre-production and spares.

Centerless Thru-feed Grinding continuously feeds cylindrical workpieces between a grinding wheel and regulating wheel without the need for centers or chucks. This high-throughput process delivers precise diameters and smooth finishes, ideal for mass production.

Centerless Thru-feed Grinding

Interference Fits rely on tight dimensional tolerances, forcibly fitting one part into another for a robust, friction-based lock (e.g., shafts and hubs).

Interference Fits

Manual Machining & One-Off Tool-Room Jobs involve conventional machining using manual lathes, mills, and surface grinders for low-volume, prototype, maintenance, or fixture fabrication tasks. This operation is ideal where CNC programming and setup time would be inefficient. It relies on skilled machinists capable of executing tight-tolerance work through hands-on precision methods, including hand-scraping and manual fitting.

Manual Machining & One-Off Tool-Room Jobs

Sawing is a cutting process that uses a saw blade to cut through metal, typically used for cutting larger metal sections to size.

Sawing

Membership in the Precision Machined Products Association (PMPA), an international trade association that represents the precision-machined products industry and provides members with technical resources, benchmarking data, advocacy, and networking to support sustainable success in precision machining operations.:contentReference[oaicite:0]{index=0}

Precision Machined Products Association (PMPA) Membership

Active registration in SAM.gov confirming the entity is eligible to receive U.S. Federal contracts and grants; includes assignment of a Unique Entity ID (UEI) and CAGE code.

System for Award Management (SAM) – Active Registration

Commercial and Government Entity (CAGE) code registration assigns a unique five-character identifier to suppliers doing business with U.S. federal agencies and defense customers through SAM.gov.

CAGE Code Registration

The design, manufacturing, and assembly of components and systems for passenger cars, commercial and off-highway vehicles, rail rolling stock, and emerging electric/Autonomous mobility platforms. High-volume production, IATF 16949 compliance, JIT supply chains, and continuous innovation ensure reliable powertrains, safety-critical systems, and cost-efficient delivery across a broad transportation landscape.

Automotive & Transportation

OMS supplies precision machined components and Ray® Snubber solutions for automotive manufacturing plants, protecting pressure instrumentation in production lines.

The fabrication, assembly, and outfitting of marine‐grade components and integrated systems for commercial vessels, naval ships, ferries, and offshore platforms. Emphasis is placed on advanced welding, corrosion‐resistant materials, and propulsion solutions that comply with certifications such as ABS and DNV, ensuring performance in demanding maritime environments.

Marine & Shipbuilding

OMS fabricates precision components and Ray® Snubbers for marine and shipbuilding projects, safeguarding sensors and gauges in corrosive, high-duty cycles.

The design and production of large‐scale machinery, automation systems, and heavy equipment for industrial applications, where reliability and performance are paramount. Adherence to ISO, ANSI, and other applicable standards supports continuous operation under high‐stress conditions, with custom‐engineered systems often required.

Industrial Machinery & Heavy Equipment

OMS manufactures CNC-machined components and pressure-protection devices used in industrial machinery and heavy equipment, supporting uptime and instrumentation reliability.

Upstream exploration and drilling, midstream transport, refining, and integrated petrochemical processing. Designs must withstand high pressure, corrosive media, and hazardous environments while meeting API/ASME and IECEx/ATEX safety standards across global operations.

Oil, Gas & Petrochemical

OMS produces precision parts and Ray® Snubbers for upstream drilling, midstream transport, and petrochemical processes operating under high pressure.

Bulk and specialty chemicals, polymer resins, composites, and next-gen materials (carbon fiber, nanomaterials). Process safety (REACH/TSCA), environmental controls, and precision quality systems enable reliable supply across diverse downstream industries.

Chemicals, Plastics & Advanced Materials

OMS machines durable, accurate components for chemical processing plants and safeguards equipment with Ray® Snubbers to maintain process integrity.

Equipment and process systems for municipal and industrial water purification, desalination, and wastewater treatment—including filtration, membranes, chemical dosing, and sludge handling. Solutions meet NSF/ANSI 61, EPA discharge limits, and global environmental regulations to safeguard public health and natural resources.

Water & Waste-Water Treatment

OMS supports municipal and industrial water/waste-water systems with machined parts and Ray® Snubbers that shield sensitive instruments from pressure spikes.

The design, manufacturing, and integration of high‐precision components, systems, and subsystems for commercial aircraft and military platforms, with emphasis on meeting stringent certifications such as AS9100, ITAR, and MIL‐STD. Priorities include advanced materials, rigorous quality assurance, and robust engineering to ensure reliability in mission‐critical applications.

Aerospace & Defense

OMS supplies precision parts and pressure-protection devices for aerospace test and ground-support applications with rigorous quality expectations.

Equipment, consumables, and turnkey systems for small-molecule, biologic, and advanced-therapy manufacturing. cGMP facilities, sterile environments, and automated bioprocess controls enable compliant, high-purity drug production from R&D scale to commercial output.

Pharmaceuticals & Biotechnology

OMS provides precision components and Ray® Snubbers that protect pressure and flow instrumentation in pharmaceutical processing and high-purity utilities.

OMS, Inc. is the exclusive manufacturer of the Ray® Pressure Snubber and machines tight-tolerance metal parts at its Indian Trail, North Carolina facility. Since 1945, the team has helped keep gauges and sensors alive in harsh, pulsing systems by smoothing out spikes before they reach the instrument. Beyond the standard Ray® Snubber line, OMS handles short-run and OEM work on modern CNC lathes and mills, with in-house inspection and grinding. Customers include equipment makers and plants in energy, water treatment, chemical processing, marine, and aerospace.

Headquarters and single-site manufacturing facility in Indian Trail, NC (Union County), inside the Old Hickory Business Park near US-74 and I-485. ~21,675-ft² layout supports Ray® Snubber production plus contract CNC turning, milling, centerless grinding, and QA inspection. Charlotte Douglas International Airport and regional freight carriers enable reliable shipping across North America.

OMS Headquarters – Indian Trail, NC

North Carolina manufacturer providing precision CNC machining and the exclusive Ray® Pressure Snubber for protecting instrumentation.

OMS

Ray® Pressure Snubbers & Precision Machining

Ray® Pressure Snubbers

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