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16KP108 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

16KP108: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.322 INCHES NOMINAL IN, outside_diameter: 0.583 INCHES NOMINAL IN, special_features: ROCKWELL HARDNESS C38 TO C46;MEETS/EXCEEDS ASME B18.21.1;FITS BOLT SIZES 0.3125, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-657-2100, 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
16KP108
NSN: 5310-01-657-2100
FSC: 5310 — Nuts and Washers
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.322 INCHES NOMINAL IN
outside_diameter0.583 INCHES NOMINAL IN
special_featuresROCKWELL HARDNESS C38 TO C46;MEETS/EXCEEDS ASME B18.21.1;FITS BOLT SIZES 0.3125
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentZINC OVERALL
material_thickness0.078 INCHES NOMINAL IN
end_item_identification6150-01-633-6567;LOAD BANK,ELECTRICAL
part_name_assigned_by_controlling_agencyWASHER,LOCK
NSN5310-01-657-2100
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 16KP108 · 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
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.583 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.078 INCHES NOMINAL IN
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.583 INCHES NOMINAL IN
MATERIAL THICKNESS0.078 INCHES NOMINAL IN
SPECIAL FEATURESROCKWELL HARDNESS C38 TO C46;MEETS/EXCEEDS ASME B18.21.1;FITS BOLT SIZES 0.3125
SURFACE TREATMENTZINC OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYWASHER,LOCK
END ITEM IDENTIFICATION6150-01-633-6567;LOAD BANK,ELECTRICAL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.322 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 1
2DA91Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 16KP108?
16KP108 is a WASHER,LOCK.
What parts can replace 16KP108?
There is 1 known substitute for 16KP108: 2DA91. Substitute compatibility should be verified for your specific system.
What is the NSN for 16KP108?
16KP108 is cataloged in the U.S. Government catalog under NSN 5310-01-657-2100. 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.