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74A661252-2001 — WASHER,SPRING TENSION

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74A661252-2001: WASHER,SPRING TENSION.

The WASHER,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 172 OVERALL, hole_diameter: 4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM IN, overall_height: 0.120 INCHES NOMINAL IN, outside_diameter: 4.625 INCHES MINIMUM AND 4.639 INCHES MAXIMUM IN, material_thickness: 0.063 INCHES NOMINAL IN, material_document_and_classification: QQ-C-533,TEMPER H FED SPEC SINGLE MATERIAL RESPONSE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-126-5276, 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
74A661252-2001
NSN: 5310-01-126-5276
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 172 OVERALL
hole_diameter4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM IN
overall_height0.120 INCHES NOMINAL IN
outside_diameter4.625 INCHES MINIMUM AND 4.639 INCHES MAXIMUM IN
material_thickness0.063 INCHES NOMINAL IN
material_document_and_classificationQQ-C-533,TEMPER H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-126-5276
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74A661252-2001 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533,TEMPER H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 4.625 INCHES MINIMUM AND 4.639 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.063 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY 172 OVERALL
•
HOLE DIAMETER: 4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.120 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533,TEMPER H FED SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER4.625 INCHES MINIMUM AND 4.639 INCHES MAXIMUM IN
MATERIAL THICKNESS0.063 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 172 OVERALL
HOLE DIAMETER4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM 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 1
10109451Reference document
Same NSN cross-reference
Reference document — Informative reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74A661252-2001?
74A661252-2001 is a WASHER,SPRING TENSION.
What parts can replace 74A661252-2001?
There is 1 known substitute for 74A661252-2001: 10109451. Substitute compatibility should be verified for your specific system.
What is the NSN for 74A661252-2001?
74A661252-2001 is cataloged in the U.S. Government catalog under NSN 5310-01-126-5276. 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.