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7521416 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

7521416: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.125 INCHES NOMINAL IN, diameter: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN, material: STEEL COMP 4150 OVERALL, head_style: FLAT CHAMFER, surface_finish: 25.0 MICROINCHES LONG SHANK, first_end_style: SQUARE. This part is cataloged in the U.S.

Government catalog under NSN 5315-00-752-1416, 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
7521416
NSN: 5315-00-752-1416
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
height0.125 INCHES NOMINAL IN
diameter0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
materialSTEEL COMP 4150 OVERALL
head_styleFLAT CHAMFER
surface_finish25.0 MICROINCHES LONG SHANK
first_end_styleSQUARE
hardness_rating45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
undercut_radius0.016 INCHES NOMINAL IN
style_designatorGROOVE
pin_head_diameter0.500 INCHES NOMINAL IN
under_head_length1.125 INCHES NOMINAL IN
undercut_diameter0.219 INCHES NOMINAL IN
NSN5315-00-752-1416
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 7521416 · 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
•
SURFACE FINISH: 25.0 MICROINCHES LONG SHANK
•
UNDERCUT DIAMETER: 0.219 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 1.125 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
•
HARDNESS RATING: 45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
•
STYLE DESIGNATOR: GROOVE
•
PIN HEAD DIAMETER: 0.500 INCHES NOMINAL IN
•
DIAMETER: 0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH25.0 MICROINCHES LONG SHANK
UNDERCUT DIAMETER0.219 INCHES NOMINAL IN
UNDER HEAD LENGTH1.125 INCHES NOMINAL IN
FIRST END STYLESQUARE
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL
STYLE DESIGNATORGROOVE
PIN HEAD DIAMETER0.500 INCHES NOMINAL IN
DIAMETER0.248 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
HEAD STYLEFLAT CHAMFER
HEIGHT0.125 INCHES NOMINAL IN
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 2
6763729Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
5315007521416Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 7521416?
7521416 is a PIN,GROOVED,HEADED.
What parts can replace 7521416?
There are 2 known substitutes for 7521416: 6763729, 5315007521416. Substitute compatibility should be verified for your specific system.
What is the NSN for 7521416?
7521416 is cataloged in the U.S. Government catalog under NSN 5315-00-752-1416. 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.