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421-4-25279-000 — PIN,GROOVED,HEADED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

421-4-25279-000: PIN,GROOVED,HEADED.

The PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 1.5 MILLIMETERS NOMINAL1.5 MILLIMETERS NOMINAL MM, diameter: 3.15 MILLIMETERS MINIMUM AND 3.15 MILLIMETERS MINIMUM AND 3.25 MILLIMETERS MAXIMUM3.25 MILLIMETERS MAXIMUM MM, head_style: BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE), pilot_diameter: 2.95 MILLIMETERS MINIMUM AND 2.95 MILLIMETERS MINIMUM AND 3.05 MILLIMETERS MAXIMUM3.05 MILLIMETERS MAXIMUM MM, first_end_style: SQUARESQUARE, style_designator: GROOVEGROOVE. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-361-5570, 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
421-4-25279-000
NSN: 5315-01-361-5570
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 0SVH5 — PSM SALES (USA)
SPECIFICATIONS
height1.5 MILLIMETERS NOMINAL1.5 MILLIMETERS NOMINAL MM
diameter3.15 MILLIMETERS MINIMUM AND 3.15 MILLIMETERS MINIMUM AND 3.25 MILLIMETERS MAXIMUM3.25 MILLIMETERS MAXIMUM MM
head_styleBUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)
pilot_diameter2.95 MILLIMETERS MINIMUM AND 2.95 MILLIMETERS MINIMUM AND 3.05 MILLIMETERS MAXIMUM3.05 MILLIMETERS MAXIMUM MM
first_end_styleSQUARESQUARE
style_designatorGROOVEGROOVE
pin_head_diameter6.0 MILLIMETERS NOMINAL6.0 MILLIMETERS NOMINAL MM
under_head_length4.60 MILLIMETERS MINIMUM AND 4.60 MILLIMETERS MINIMUM AND 5.13 MILLIMETERS MAXIMUM5.13 MILLIMETERS MAXIMUM MM
NSN5315-01-361-5570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 421-4-25279-000 · 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: 4.60 MILLIMETERS MINIMUM AND 4.60 MILLIMETERS MINIMUM AND 5.13 MILLIMETERS MAXIMUM5.13 MILLIMETERS MAXIMUM MM
•
FIRST END STYLE: SQUARESQUARE
•
STYLE DESIGNATOR: GROOVEGROOVE
•
PIN HEAD DIAMETER: 6.0 MILLIMETERS NOMINAL6.0 MILLIMETERS NOMINAL MM
•
DIAMETER: 3.15 MILLIMETERS MINIMUM AND 3.15 MILLIMETERS MINIMUM AND 3.25 MILLIMETERS MAXIMUM3.25 MILLIMETERS MAXIMUM MM
•
HEAD STYLE: BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)
•
PILOT DIAMETER: 2.95 MILLIMETERS MINIMUM AND 2.95 MILLIMETERS MINIMUM AND 3.05 MILLIMETERS MAXIMUM3.05 MILLIMETERS MAXIMUM MM
•
HEIGHT: 1.5 MILLIMETERS NOMINAL1.5 MILLIMETERS NOMINAL MM
TECHNICAL CHARACTERISTICS
UNDER HEAD LENGTH4.60 MILLIMETERS MINIMUM AND 4.60 MILLIMETERS MINIMUM AND 5.13 MILLIMETERS MAXIMUM5.13 MILLIMETERS MAXIMUM MM
FIRST END STYLESQUARESQUARE
STYLE DESIGNATORGROOVEGROOVE
PIN HEAD DIAMETER6.0 MILLIMETERS NOMINAL6.0 MILLIMETERS NOMINAL MM
DIAMETER3.15 MILLIMETERS MINIMUM AND 3.15 MILLIMETERS MINIMUM AND 3.25 MILLIMETERS MAXIMUM3.25 MILLIMETERS MAXIMUM MM
HEAD STYLEBUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)BUTTON (RATIO OF HGTH/CRRG OVER 0.190 TO 0.300 INCLUSIVE)
PILOT DIAMETER2.95 MILLIMETERS MINIMUM AND 2.95 MILLIMETERS MINIMUM AND 3.05 MILLIMETERS MAXIMUM3.05 MILLIMETERS MAXIMUM MM
HEIGHT1.5 MILLIMETERS NOMINAL1.5 MILLIMETERS NOMINAL 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

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 421-4-25279-000?
421-4-25279-000 is a PIN,GROOVED,HEADED.
What is the NSN for 421-4-25279-000?
421-4-25279-000 is cataloged in the U.S. Government catalog under NSN 5315-01-361-5570. This indicates validated use in U.S. government and defense supply chains.
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