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7031639 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7031639: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.750 INCHES NOMINAL IN, diameter: 0.749 INCHES NOMINAL IN, material: STEEL OVERALL, head_style: TEE NO. 3, head_width: 1.500 INCHES NOMINAL IN, head_length: 2.750 INCHES NOMINAL IN.

This part is cataloged in the U.S. Government catalog under NSN 5315-01-510-8640, 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
7031639
NSN: 5315-01-510-8640
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
height0.750 INCHES NOMINAL IN
diameter0.749 INCHES NOMINAL IN
materialSTEEL OVERALL
head_styleTEE NO. 3
head_width1.500 INCHES NOMINAL IN
head_length2.750 INCHES NOMINAL IN
undercut_width0.125 INCHES NOMINAL IN
first_end_styleCHAMFERED
effective_length1.031 INCHES NOMINAL IN
special_featuresLENGTH BELOW 2ND GROOVE IS THREADED (0.625-11-UNC-3A) A
style_designatorGROOVE
surface_treatmentPRIMER AND PLASTIC POLYURETHANE OVERALL
NSN5315-01-510-8640
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7031639 · 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
•
UNDERCUT WIDTH: 0.125 INCHES NOMINAL IN
•
UNDERCUT DIAMETER: 0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
•
HEAD WIDTH: 1.500 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 2.187 INCHES NOMINAL IN
•
FIRST END STYLE: CHAMFERED
•
STYLE DESIGNATOR: GROOVE
•
DIAMETER: 0.749 INCHES NOMINAL IN
•
FIRST END TAPER ANGLE: 30.0 DEGREES NOMINAL
TECHNICAL CHARACTERISTICS
UNDERCUT WIDTH0.125 INCHES NOMINAL IN
UNDERCUT DIAMETER0.497 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN
HEAD WIDTH1.500 INCHES NOMINAL IN
UNDER HEAD LENGTH2.187 INCHES NOMINAL IN
FIRST END STYLECHAMFERED
STYLE DESIGNATORGROOVE
DIAMETER0.749 INCHES NOMINAL IN
FIRST END TAPER ANGLE30.0 DEGREES NOMINAL
EFFECTIVE LENGTH1.031 INCHES NOMINAL IN
HEAD STYLETEE NO. 3
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

No substitute or cross-reference records for this part.

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 7031639?
7031639 is a PIN,GROOVED,HEADED.
What is the NSN for 7031639?
7031639 is cataloged in the U.S. Government catalog under NSN 5315-01-510-8640. 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.