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BB5181 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

BB5181: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, first_end_style: CHAMFERED, pin_overall_length: 0.281 INCHES NOMINAL IN, pin_overall_diameter: 0.1860 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN, first_end_taper_angle: 25.0 DEGREES NOMINAL, first_end_taper_length: 0.016 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-010-9579, 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
BB5181
NSN: 5315-00-010-9579
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
first_end_styleCHAMFERED
pin_overall_length0.281 INCHES NOMINAL IN
pin_overall_diameter0.1860 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
first_end_taper_angle25.0 DEGREES NOMINAL
first_end_taper_length0.016 INCHES NOMINAL IN
material_document_and_classificationQQ-S-633 1010 TO 1030 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
second_end_relationship_with_first_endIDENTICAL
NSN5315-00-010-9579
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: BB5181 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
FIRST END TAPER LENGTH: 0.016 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 1010 TO 1030 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
FIRST END TAPER ANGLE: 25.0 DEGREES NOMINAL
•
PIN OVERALL DIAMETER: 0.1860 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 0.281 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
FIRST END TAPER LENGTH0.016 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 1010 TO 1030 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
FIRST END TAPER ANGLE25.0 DEGREES NOMINAL
PIN OVERALL DIAMETER0.1860 INCHES MINIMUM AND 0.1880 INCHES MAXIMUM IN
PIN OVERALL LENGTH0.281 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 6
109579Reference document
Same NSN cross-reference
Reference document — Secondary reference
12466220Reference document
Same NSN cross-reference
Reference document — Secondary reference
212D6Reference document
Same NSN cross-reference
Reference document — Secondary reference
145603Reference document
Same NSN cross-reference
Reference document — Secondary reference
1246L220Reference document
Same NSN cross-reference
Reference document — Secondary reference
6260TReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is BB5181?
BB5181 is a PIN,STRAIGHT,HEADLESS.
What parts can replace BB5181?
There are 6 known substitutes for BB5181: 109579, 12466220, 212D6 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for BB5181?
BB5181 is cataloged in the U.S. Government catalog under NSN 5315-00-010-9579. 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.