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ATR-250-4375F — PIN,STRAIGHT,KNURLED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

ATR-250-4375F: PIN,STRAIGHT,KNURLED.

The PIN,STRAIGHT,KNURLED is a the manufacturer industrial component. Key specifications include diameter: 0.4375 INCHES NOMINAL IN, material: ALUMINUM ALLOY 6061 OVERALL, overall_length: 2.500 INCHES NOMINAL IN, first_end_style: SQUARE, special_features: COLOR RED, WITH THREE HOLES., style_designator: STRAIGHT KNURLED. This part is cataloged in the U.S.

Government catalog under NSN 5315-01-398-8761, 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
ATR-250-4375F
NSN: 5315-01-398-8761
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 9X645 — AE OPCO II LLC DBA AEROMATRIX COMPOSITES (USA)
SPECIFICATIONS
diameter0.4375 INCHES NOMINAL IN
materialALUMINUM ALLOY 6061 OVERALL
overall_length2.500 INCHES NOMINAL IN
first_end_styleSQUARE
special_featuresCOLOR RED, WITH THREE HOLES.
style_designatorSTRAIGHT KNURLED
second_end_relationship_with_first_endIDENTICAL
NSN5315-01-398-8761
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: ATR-250-4375F · 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
•
FIRST END STYLE: SQUARE
•
STYLE DESIGNATOR: STRAIGHT KNURLED
•
DIAMETER: 0.4375 INCHES NOMINAL IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
MATERIAL: ALUMINUM ALLOY 6061 OVERALL
TECHNICAL CHARACTERISTICS
FIRST END STYLESQUARE
STYLE DESIGNATORSTRAIGHT KNURLED
DIAMETER0.4375 INCHES NOMINAL IN
OVERALL LENGTH2.500 INCHES NOMINAL IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
SPECIAL FEATURESCOLOR RED, WITH THREE HOLES.
MATERIALALUMINUM ALLOY 6061 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
GP510EL3Same 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 ATR-250-4375F?
ATR-250-4375F is a PIN,STRAIGHT,KNURLED.
What parts can replace ATR-250-4375F?
There is 1 known substitute for ATR-250-4375F: GP510EL3. Substitute compatibility should be verified for your specific system.
What is the NSN for ATR-250-4375F?
ATR-250-4375F is cataloged in the U.S. Government catalog under NSN 5315-01-398-8761. 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.