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5100-100C — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

5100-100C: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, ring_style: EXTERNAL, usage_design: EXTERNAL, inside_diameter: 0.925 INCHES NOMINAL IN, major_thickness: 0.046 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-281-9856, 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
5100-100C
NSN: 5325-00-281-9856
FSC: 5325 — Fastening Devices
CAGE: 30177 — IWC LLC DBA IDEAL WINDLASS COMPANY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
ring_styleEXTERNAL
usage_designEXTERNAL
inside_diameter0.925 INCHES NOMINAL IN
major_thickness0.046 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleROUNDED CORNERS
NSN5325-00-281-9856
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5100-100C · 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: EXTERNAL
•
CROSS-SECTIONAL SHAPE STYLE: ROUNDED CORNERS
•
MAJOR THICKNESS: 0.046 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.925 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: EXTERNAL
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLEROUNDED CORNERS
MAJOR THICKNESS0.046 INCHES NOMINAL IN
INSIDE DIAMETER0.925 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEEXTERNAL
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 7
CR10M187Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
574-4801-810197PC211Reference document
Same NSN cross-reference
Reference document — Secondary reference
2060-82Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-DTL-21248Reference document
Same NSN cross-reference
Reference document — Identification reference
3607-5-93Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
2040-82Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
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 5100-100C?
5100-100C is a RING,RETAINING.
What parts can replace 5100-100C?
There are 7 known substitutes for 5100-100C: CR10M187, 574-4801-810197PC211, 2060-82 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5100-100C?
5100-100C is cataloged in the U.S. Government catalog under NSN 5325-00-281-9856. 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.