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642A174 P-16 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

642A174 P-16: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.312 INCHES NOMINAL IN, style_designator: RECTANGULAR KEY, material_thickness: 0.094 INCHES NOMINAL IN, external_prebent_key_width: 2.375 INCHES NOMINAL IN, overall_distance_including_keys: 3.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-171-0582, 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
642A174 P-16
NSN: 5310-01-171-0582
FSC: 5310 — Nuts and Washers
CAGE: 01289 — GENERAL ELECTRIC COMPANY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.312 INCHES NOMINAL IN
style_designatorRECTANGULAR KEY
material_thickness0.094 INCHES NOMINAL IN
external_prebent_key_width2.375 INCHES NOMINAL IN
overall_distance_including_keys3.125 INCHES NOMINAL IN
material_document_and_classificationB8A4C2,FSCM 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
distance_from_centerline_to_end_of_longest_key1.937 INCHES NOMINAL IN
NSN5310-01-171-0582
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 642A174 P-16 · 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
•
DISTANCE FROM CENTERLINE TO END OF LONGEST KEY: 1.937 INCHES NOMINAL IN
•
OVERALL DISTANCE INCLUDING KEYS: 3.125 INCHES NOMINAL IN
•
STYLE DESIGNATOR: RECTANGULAR KEY
•
MATERIAL DOCUMENT AND CLASSIFICATION: B8A4C2,FSCM 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.094 INCHES NOMINAL IN
•
EXTERNAL PREBENT KEY WIDTH: 2.375 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 1.312 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
DISTANCE FROM CENTERLINE TO END OF LONGEST KEY1.937 INCHES NOMINAL IN
OVERALL DISTANCE INCLUDING KEYS3.125 INCHES NOMINAL IN
STYLE DESIGNATORRECTANGULAR KEY
MATERIAL DOCUMENT AND CLASSIFICATIONB8A4C2,FSCM 01289 MFR REF SINGLE MATERIAL RESPONSE OVERALL
MATERIAL THICKNESS0.094 INCHES NOMINAL IN
EXTERNAL PREBENT KEY WIDTH2.375 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
HOLE DIAMETER1.312 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 2
PL-781E826 PART 50Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
642A174 PIECE 16Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
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 642A174 P-16?
642A174 P-16 is a WASHER,KEY.
What parts can replace 642A174 P-16?
There are 2 known substitutes for 642A174 P-16: PL-781E826 PART 50, 642A174 PIECE 16. Substitute compatibility should be verified for your specific system.
What is the NSN for 642A174 P-16?
642A174 P-16 is cataloged in the U.S. Government catalog under NSN 5310-01-171-0582. 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.