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74A410660-2001 — WASHER,SHOULDERED

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

74A410660-2001: WASHER,SHOULDERED.

The WASHER,SHOULDERED is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 630 OVERALL, hole_diameter: 0.990 INCHES MINIMUM AND 0.992 INCHES MAXIMUM IN, surface_finish: 32.0 MICROINCHES COUNTERBORE WALL, shoulder_height: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN, outside_diameter: 1.250 INCHES NOMINAL IN, style_designator: SHOULDERED. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-121-9396, 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
74A410660-2001
NSN: 5310-01-121-9396
FSC: 5310 — Nuts and Washers
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY 630 OVERALL
hole_diameter0.990 INCHES MINIMUM AND 0.992 INCHES MAXIMUM IN
surface_finish32.0 MICROINCHES COUNTERBORE WALL
shoulder_height0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
outside_diameter1.250 INCHES NOMINAL IN
style_designatorSHOULDERED
shoulder_diameter1.127 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
material_thickness0.059 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
material_document_and_classificationAMS 4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-121-9396
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 74A410660-2001 · 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
•
SURFACE FINISH: 63.0 MICROINCHES TOP
•
SHOULDER HEIGHT: 0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 1.250 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.059 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
•
SHOULDER DIAMETER: 1.127 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES TOP
SURFACE FINISH32.0 MICROINCHES COUNTERBORE WALL
SHOULDER HEIGHT0.165 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4640 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER1.250 INCHES NOMINAL IN
MATERIAL THICKNESS0.059 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN
SHOULDER DIAMETER1.127 INCHES MINIMUM AND 1.128 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY 630 OVERALL
HOLE DIAMETER0.990 INCHES MINIMUM AND 0.992 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
10109390Reference 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 74A410660-2001?
74A410660-2001 is a WASHER,SHOULDERED.
What parts can replace 74A410660-2001?
There is 1 known substitute for 74A410660-2001: 10109390. Substitute compatibility should be verified for your specific system.
What is the NSN for 74A410660-2001?
74A410660-2001 is cataloged in the U.S. Government catalog under NSN 5310-01-121-9396. 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.