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2537551 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

2537551: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: ASBESTOS AND PLASTIC PHENOLIC AND PLASTIC POLYAMIDE NYLON, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL OR INTERNAL, inside_diameter: 0.395 INCHES NOMINAL IN, major_thickness: 0.110 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-969-2154, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
2537551
NSN: 5325-00-969-2154
NIINs: 009692154, 010547085
FSC: 5325 — Fastening Devices
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialASBESTOS AND PLASTIC PHENOLIC AND PLASTIC POLYAMIDE NYLON
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL OR INTERNAL
inside_diameter0.395 INCHES NOMINAL IN
major_thickness0.110 INCHES NOMINAL IN
outside_diameter0.510 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleSPLIT ROUND
NSN5325-00-969-2154
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 2537551 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
SUBSTITUTES & CROSS-REFERENCES 1
BUWEPSDWG2537551Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2537551?
2537551 is a RING,RETAINING.
What parts can replace 2537551?
There is 1 known substitute for 2537551: BUWEPSDWG2537551. Substitute compatibility should be verified for your specific system.
What is the NSN for 2537551?
2537551 is cataloged in the U.S. Government catalog under NSN 5325-00-969-2154. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.