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31000-621 — PIN,STRAIGHT,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

31000-621: PIN,STRAIGHT,HEADED.

The PIN,STRAIGHT,HEADED is a the manufacturer industrial component. Key specifications include height: 0.156 INCHES NOMINAL IN, diameter: 0.50 INCHES NOMINAL IN, material: STEEL OVERALL, head_style: FLAT, hardness_rating: 80.00 ROCKWELL B NOMINAL OVERALL, style_designator: STRAIGHT. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-689-6631, 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
31000-621
NSN: 5315-01-689-6631
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 30003 — NAVAL AIR SYSTEMS COMMAND MANAGED ORIGINAL DESIGN ACTIVITY NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
height0.156 INCHES NOMINAL IN
diameter0.50 INCHES NOMINAL IN
materialSTEEL OVERALL
head_styleFLAT
hardness_rating80.00 ROCKWELL B NOMINAL OVERALL
style_designatorSTRAIGHT
pin_head_diameter0.625 INCHES NOMINAL IN
surface_treatmentZINC OVERALL
under_head_length2.50 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyCLEVIS PIN
NSN5315-01-689-6631
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 31000-621 · 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
•
UNDER HEAD LENGTH: 2.50 INCHES NOMINAL IN
•
HARDNESS RATING: 80.00 ROCKWELL B NOMINAL OVERALL
•
STYLE DESIGNATOR: STRAIGHT
•
PIN HEAD DIAMETER: 0.625 INCHES NOMINAL IN
•
DIAMETER: 0.50 INCHES NOMINAL IN
•
HEAD STYLE: FLAT
•
HEIGHT: 0.156 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS
UNDER HEAD LENGTH2.50 INCHES NOMINAL IN
HARDNESS RATING80.00 ROCKWELL B NOMINAL OVERALL
STYLE DESIGNATORSTRAIGHT
PIN HEAD DIAMETER0.625 INCHES NOMINAL IN
DIAMETER0.50 INCHES NOMINAL IN
HEAD STYLEFLAT
HEIGHT0.156 INCHES NOMINAL IN
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYCLEVIS PIN
MATERIALSTEEL 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
97245A724Same 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 31000-621?
31000-621 is a PIN,STRAIGHT,HEADED.
What parts can replace 31000-621?
There is 1 known substitute for 31000-621: 97245A724. Substitute compatibility should be verified for your specific system.
What is the NSN for 31000-621?
31000-621 is cataloged in the U.S. Government catalog under NSN 5315-01-689-6631. 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.