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Q-8318 — PIN,STRAIGHT,HEADLESS

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

Q-8318: PIN,STRAIGHT,HEADLESS.

The PIN,STRAIGHT,HEADLESS is a the manufacturer industrial component. Key specifications include pin_overall_length: 40.65 MILLIMETERS MINIMUM AND 41.15 MILLIMETERS MAXIMUM MM, pin_overall_diameter: 3.9624 MILLIMETERS MINIMUM AND 3.9675 MILLIMETERS MAXIMUM MM. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-157-3512, 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
Q-8318
NSN: 5315-01-157-3512
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 60380 — TIMKEN AEROSPACE, INC DBA TORRINGTON PRODUCT (USA)
SPECIFICATIONS
pin_overall_length40.65 MILLIMETERS MINIMUM AND 41.15 MILLIMETERS MAXIMUM MM
pin_overall_diameter3.9624 MILLIMETERS MINIMUM AND 3.9675 MILLIMETERS MAXIMUM MM
NSN5315-01-157-3512
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: Q-8318 · 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 DIAMETER: 3.9624 MILLIMETERS MINIMUM AND 3.9675 MILLIMETERS MAXIMUM MM
•
PIN OVERALL LENGTH: 40.65 MILLIMETERS MINIMUM AND 41.15 MILLIMETERS MAXIMUM MM
TECHNICAL CHARACTERISTICS
PIN OVERALL DIAMETER3.9624 MILLIMETERS MINIMUM AND 3.9675 MILLIMETERS MAXIMUM MM
PIN OVERALL LENGTH40.65 MILLIMETERS MINIMUM AND 41.15 MILLIMETERS MAXIMUM MM
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
8N3303Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is Q-8318?
Q-8318 is a PIN,STRAIGHT,HEADLESS.
What parts can replace Q-8318?
There is 1 known substitute for Q-8318: 8N3303. Substitute compatibility should be verified for your specific system.
What is the NSN for Q-8318?
Q-8318 is cataloged in the U.S. Government catalog under NSN 5315-01-157-3512. 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.