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75545 — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

75545: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: STEEL, ring_style: HOOKED, usage_design: INTERNAL, inside_diameter: 4.000 INCHES NOMINAL IN, strength_rating: ERR-060, outside_diameter: 4.186 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-597-4587, 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
75545
NSN: 5325-00-597-4587
NIINs: 005974587, 016159977
FSC: 5325 — Fastening Devices
CAGE: 78943 — TRIUMPH THERMAL SYSTEMS, LLC (USA)
SPECIFICATIONS
materialSTEEL
ring_styleHOOKED
usage_designINTERNAL
inside_diameter4.000 INCHES NOMINAL IN
strength_ratingERR-060
outside_diameter4.186 INCHES NOMINAL IN
material_diameter0.093 INCHES NOMINAL IN
surface_treatmentCADMIUM
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUND
material_document_and_classificationMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
NSN5325-00-597-4587
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 75545 · 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
•
STRENGTH RATING: ERR-060
•
MATERIAL DIAMETER: 0.093 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
•
CROSS-SECTIONAL SHAPE STYLE: ROUND
•
OUTSIDE DIAMETER: 4.186 INCHES NOMINAL IN
•
INSIDE DIAMETER: 4.000 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
USAGE DESIGNINTERNAL
STRENGTH RATINGERR-060
MATERIAL DIAMETER0.093 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE
CROSS-SECTIONAL SHAPE STYLEROUND
OUTSIDE DIAMETER4.186 INCHES NOMINAL IN
INSIDE DIAMETER4.000 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEHOOKED
SURFACE TREATMENTCADMIUM
SUBSTITUTES & CROSS-REFERENCES 1
S59-160Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 75545?
75545 is a RING,RETAINING.
What parts can replace 75545?
There is 1 known substitute for 75545: S59-160. Substitute compatibility should be verified for your specific system.
What is the NSN for 75545?
75545 is cataloged in the U.S. Government catalog under NSN 5325-00-597-4587. 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.