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901-74 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

901-74: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN, outside_diameter: 0.377 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN, style_designator: COUNTERSINK EXTERNAL TEETH, countersink_angle: 95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM, surface_treatment: CADMIUM OVERALL, material_thickness: 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-197-3137, 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
901-74
NSN: 5310-00-197-3137
FSC: 5310 — Nuts and Washers
CAGE: F0450 — SARL MAUNY (FRA)
SPECIFICATIONS
hole_diameter0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
outside_diameter0.377 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
style_designatorCOUNTERSINK EXTERNAL TEETH
countersink_angle95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
surface_treatmentCADMIUM OVERALL
material_thickness0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-00-197-3137
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 901-74 · 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-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: COUNTERSINK EXTERNAL TEETH
•
OUTSIDE DIAMETER: 0.377 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
•
SURFACE TREATMENT: CADMIUM OVERALL
•
COUNTERSINK ANGLE: 95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
•
HOLE DIAMETER: 0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORCOUNTERSINK EXTERNAL TEETH
OUTSIDE DIAMETER0.377 INCHES MINIMUM AND 0.394 INCHES MAXIMUM IN
MATERIAL THICKNESS0.016 INCHES MINIMUM AND 0.020 INCHES MAXIMUM IN
SURFACE TREATMENTCADMIUM OVERALL
COUNTERSINK ANGLE95.0 DEGREES MINIMUM AND 105.0 DEGREES MAXIMUM
HOLE DIAMETER0.195 INCHES MINIMUM AND 0.204 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 2
AN936D10Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
1510-05Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 901-74?
901-74 is a WASHER,LOCK.
What parts can replace 901-74?
There are 2 known substitutes for 901-74: AN936D10, 1510-05. Substitute compatibility should be verified for your specific system.
What is the NSN for 901-74?
901-74 is cataloged in the U.S. Government catalog under NSN 5310-00-197-3137. 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.