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549222 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

549222: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1095, end_style: 90 DEGREE PARALLEL, ring_style: STRAIGHT GAP, usage_design: EXTERNAL, inside_diameter: 0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, outside_diameter: 0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-303-4932, 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
549222
NSN: 5325-00-303-4932
NIINs: 003034932, 008205734, 013610891
FSC: 5325 — Fastening Devices
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
materialSTEEL COMP 1095
end_style90 DEGREE PARALLEL
ring_styleSTRAIGHT GAP
usage_designEXTERNAL
inside_diameter0.370 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
outside_diameter0.432 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN
material_diameter0.031 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_hardness_rating45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM
cross-sectional_shape_styleROUND
material_document_and_classificationAMS 7304 ASSN STD SINGLE MATERIAL RESPONSE
NSN5325-00-303-4932
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 549222 · 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
•
PLATE OVERALL WIDTH: 0.550 INCHES NOMINAL IN
•
PLATE OVERALL LENGTH: 0.828 INCHES NOMINAL IN
•
SURFACE TREATMENT: OXIDE FILM OVERALL
•
TURNBUTTON CLINCH PLATE STYLE: CLINCH PLATE
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
PLATE OVERALL WIDTH0.550 INCHES NOMINAL IN
PLATE OVERALL LENGTH0.828 INCHES NOMINAL IN
SURFACE TREATMENTOXIDE FILM OVERALL
TURNBUTTON CLINCH PLATE STYLECLINCH PLATE
MATERIALCOPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
UC410AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 549222?
549222 is a RING,RETAINING.
What parts can replace 549222?
There is 1 known substitute for 549222: UC410A. Substitute compatibility should be verified for your specific system.
What is the NSN for 549222?
549222 is cataloged in the U.S. Government catalog under NSN 5325-00-303-4932. 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.