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256-6603687-VHBM-71 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

256-6603687-VHBM-71: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include material: STEEL COMP E4340 OVERALL, first_end_style: CHAMFERED, second_end_style: SQUARE INTERNALLY THREADED, pin_overall_length: 4.500 INCHES NOMINAL IN, pin_overall_diameter: 1.6251 INCHES MINIMUM AND 1.6253 INCHES MAXIMUM IN, second_end_relationship_with_first_end: NOT IDENTICAL. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-330-7311, 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
256-6603687-VHBM-71
NSN: 5315-01-330-7311
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP E4340 OVERALL
first_end_styleCHAMFERED
second_end_styleSQUARE INTERNALLY THREADED
pin_overall_length4.500 INCHES NOMINAL IN
pin_overall_diameter1.6251 INCHES MINIMUM AND 1.6253 INCHES MAXIMUM IN
second_end_relationship_with_first_endNOT IDENTICAL
NSN5315-01-330-7311
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 256-6603687-VHBM-71 · 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 STYLE: CHAMFERED
•
PIN OVERALL DIAMETER: 1.6251 INCHES MINIMUM AND 1.6253 INCHES MAXIMUM IN
•
PIN OVERALL LENGTH: 4.500 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: NOT IDENTICAL
•
SECOND END STYLE: SQUARE INTERNALLY THREADED
•
MATERIAL: STEEL COMP E4340 OVERALL
TECHNICAL CHARACTERISTICS
FIRST END STYLECHAMFERED
PIN OVERALL DIAMETER1.6251 INCHES MINIMUM AND 1.6253 INCHES MAXIMUM IN
PIN OVERALL LENGTH4.500 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDNOT IDENTICAL
SECOND END STYLESQUARE INTERNALLY THREADED
MATERIALSTEEL COMP E4340 OVERALL
OTHER ITEMS IN FSC 5315 — Nails, Machine Keys, and Pins
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5315-00-000-1037 5315-00-000-1067 5315-00-000-1245 5315-00-000-1372 5315-00-000-1412 5315-00-001-1571 5315-00-001-1572 5315-00-001-1602
SUBSTITUTES & CROSS-REFERENCES 1
5959304-61Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 256-6603687-VHBM-71?
256-6603687-VHBM-71 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 256-6603687-VHBM-71?
There is 1 known substitute for 256-6603687-VHBM-71: 5959304-61. Substitute compatibility should be verified for your specific system.
What is the NSN for 256-6603687-VHBM-71?
256-6603687-VHBM-71 is cataloged in the U.S. Government catalog under NSN 5315-01-330-7311. 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.