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31AX 566 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

31AX 566: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include pin_overall_length: 0.250 INCHES NOMINAL IN, end_item_identification: 2320-01-529-2251, TRUCK, BOMB SERVICE; MRAP BUFFALO MK2A2, part_name_assigned_by_controlling_agency: PIN. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-547-7312, 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
31AX 566
NSN: 5315-01-547-7312
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 89619 — MACK TRUCKS, INC. DBA MACUNGIE OPERATIONS DIV LEHIGH VALLEY OPERATIONS (USA)
SPECIFICATIONS
pin_overall_length0.250 INCHES NOMINAL IN
end_item_identification2320-01-529-2251, TRUCK, BOMB SERVICE; MRAP BUFFALO MK2A2
part_name_assigned_by_controlling_agencyPIN
NSN5315-01-547-7312
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 31AX 566 · 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
•
PIN OVERALL LENGTH: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
PIN OVERALL LENGTH0.250 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPIN
END ITEM IDENTIFICATION2320-01-529-2251, TRUCK, BOMB SERVICE; MRAP BUFFALO MK2A2
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
999RU1792Same 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 31AX 566?
31AX 566 is a PIN,STRAIGHT,HEADLESS.
What parts can replace 31AX 566?
There is 1 known substitute for 31AX 566: 999RU1792. Substitute compatibility should be verified for your specific system.
What is the NSN for 31AX 566?
31AX 566 is cataloged in the U.S. Government catalog under NSN 5315-01-547-7312. 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.