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1001-X18-BC — RING,RETAINING

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

1001-X18-BC: RING,RETAINING.

The RING,RETAINING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, usage_design: EXTERNAL, inside_diameter: 0.145 INCHES NOMINAL IN, major_thickness: 0.015 INCHES NOMINAL IN, casehardening_indicator: NOT CASEHARDENED, cross-sectional_shape_style: RECTANGULAR. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-724-2591, 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
1001-X18-BC
NSN: 5325-00-724-2591
FSC: 5325 — Fastening Devices
CAGE: 07382 — ROTOR CLIP COMPANY, INC. (USA)
SPECIFICATIONS
materialCOPPER ALLOY
ring_styleE
usage_designEXTERNAL
inside_diameter0.145 INCHES NOMINAL IN
major_thickness0.015 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
cross-sectional_shape_styleRECTANGULAR
NSN5325-00-724-2591
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1001-X18-BC · 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: RECTANGULAR
•
MAJOR THICKNESS: 0.015 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.145 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
RING STYLE: E
•
MATERIAL: COPPER ALLOY
TECHNICAL CHARACTERISTICS
USAGE DESIGNEXTERNAL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
MAJOR THICKNESS0.015 INCHES NOMINAL IN
INSIDE DIAMETER0.145 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
RING STYLEE
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 3
5131-18CReference document
Same NSN cross-reference
Reference document — Design control — primary reference
MS16634-5018Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5131-18-2Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 1001-X18-BC?
1001-X18-BC is a RING,RETAINING.
What parts can replace 1001-X18-BC?
There are 3 known substitutes for 1001-X18-BC: 5131-18C, MS16634-5018, 5131-18-2. Substitute compatibility should be verified for your specific system.
What is the NSN for 1001-X18-BC?
1001-X18-BC is cataloged in the U.S. Government catalog under NSN 5325-00-724-2591. 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.