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440975PC1 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

440975PC1: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1074 OVERALL, hole_diameter: 0.281 INCHES NOMINAL IN, hardness_rating: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM, outside_diameter: 0.414 INCHES NOMINAL IN, special_features: 31 TOOTH SERRATIONS 0.018 IN. DEEP IN, style_designator: SERRATED AND SHOULDERED.

This part is cataloged in the U.S. Government catalog under NSN 5310-00-153-2832, 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
440975PC1
NSN: 5310-00-153-2832
FSC: 5310 — Nuts and Washers
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 1074 OVERALL
hole_diameter0.281 INCHES NOMINAL IN
hardness_rating30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
outside_diameter0.414 INCHES NOMINAL IN
special_features31 TOOTH SERRATIONS 0.018 IN. DEEP IN
style_designatorSERRATED AND SHOULDERED
surface_treatmentZINC OVERALL
material_thickness0.050 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-Z-325, CL2, TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-153-2832
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 440975PC1 · 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 TREATMENT DOCUMENT AND CLASSIFICATION: QQ-Z-325, CL2, TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
•
STYLE DESIGNATOR: SERRATED AND SHOULDERED
•
OUTSIDE DIAMETER: 0.414 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.050 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL COMP 1074 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325, CL2, TY2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM
STYLE DESIGNATORSERRATED AND SHOULDERED
OUTSIDE DIAMETER0.414 INCHES NOMINAL IN
MATERIAL THICKNESS0.050 INCHES NOMINAL IN
SPECIAL FEATURES31 TOOTH SERRATIONS 0.018 IN. DEEP IN
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL COMP 1074 OVERALL
HOLE DIAMETER0.281 INCHES NOMINAL IN
OTHER ITEMS IN FSC 5310 — Nuts and Washers
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5310-00-000-0040 5310-00-000-0077 5310-00-000-0079 5310-00-000-1146 5310-00-000-3815 5310-00-000-4532 5310-00-000-4540
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 440975PC1?
440975PC1 is a WASHER,LOCK.
What is the NSN for 440975PC1?
440975PC1 is cataloged in the U.S. Government catalog under NSN 5310-00-153-2832. 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.