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A281427 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

A281427: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: INTERNAL, inside_diameter: 1.306 INCHES NOMINAL IN, major_thickness: 0.375 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-561-9338, 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
A281427
NSN: 5325-00-561-9338
FSC: 5325 — Fastening Devices
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designINTERNAL
inside_diameter1.306 INCHES NOMINAL IN
major_thickness0.375 INCHES NOMINAL IN
outside_diameter1.406 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-561-9338
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: A281427 · 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
KEY FEATURES
•
USAGE DESIGN: INTERNAL
•
END STYLE: 90 DEGREE PARALLEL
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
OUTSIDE DIAMETER: 1.406 INCHES NOMINAL IN
•
MAJOR THICKNESS: 0.375 INCHES NOMINAL IN
•
INSIDE DIAMETER: 1.306 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: STRAIGHT GAP
TECHNICAL CHARACTERISTICS
USAGE DESIGNINTERNAL
END STYLE90 DEGREE PARALLEL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OUTSIDE DIAMETER1.406 INCHES NOMINAL IN
MAJOR THICKNESS0.375 INCHES NOMINAL IN
INSIDE DIAMETER1.306 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLESTRAIGHT GAP
MATERIALSTEEL
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 1
837273Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A281427?
A281427 is a RING,RETAINING.
What parts can replace A281427?
There is 1 known substitute for A281427: 837273. Substitute compatibility should be verified for your specific system.
What is the NSN for A281427?
A281427 is cataloged in the U.S. Government catalog under NSN 5325-00-561-9338. 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.