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G371929-1 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

G371929-1: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 631 OVERALL, hole_diameter: 0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN, outside_diameter: 0.266 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN, style_designator: KEY, surface_treatment: PASSIVATE OVERALL, material_thickness: 0.028 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-320-7175, 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
G371929-1
NSN: 5310-01-320-7175
FSC: 5310 — Nuts and Washers
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 631 OVERALL
hole_diameter0.171 INCHES MINIMUM AND 0.181 INCHES MAXIMUM IN
outside_diameter0.266 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
style_designatorKEY
surface_treatmentPASSIVATE OVERALL
material_thickness0.028 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
internal_key_quantity2
internal_straight_key_width0.032 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
material_document_and_classificationMIL-S-25043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
surface_treatment_document_and_classificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
distance_from_centerline_to_top_of_internal_key0.05675 INCHES NOMINAL IN
NSN5310-01-320-7175
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: G371929-1 · 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.032 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
•
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY: 0.05675 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
STYLE DESIGNATOR: KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-25043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 0.266 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
•
MATERIAL THICKNESS: 0.028 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.032 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN
DISTANCE FROM CENTERLINE TO TOP OF INTERNAL KEY0.05675 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
STYLE DESIGNATORKEY
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-25043 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER0.266 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN
MATERIAL THICKNESS0.028 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL COMP 631 OVERALL
INTERNAL KEY QUANTITY2
SUBSTITUTES & CROSS-REFERENCES 3
560R537H02Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
82639-2Reference document
Same NSN cross-reference
Reference document — Secondary reference
76000187-005Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is G371929-1?
G371929-1 is a WASHER,KEY.
What parts can replace G371929-1?
There are 3 known substitutes for G371929-1: 560R537H02, 82639-2, 76000187-005. Substitute compatibility should be verified for your specific system.
What is the NSN for G371929-1?
G371929-1 is cataloged in the U.S. Government catalog under NSN 5310-01-320-7175. 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.