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91475A391 — WASHER,LOCK

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

91475A391: WASHER,LOCK.

The WASHER,LOCK is a the manufacturer industrial component. Key specifications include hole_diameter: 0.193 INCHES NOMINAL IN, outside_diameter: 0.334 INCHES NOMINAL IN, special_features: FOR 10 SCREW SIZE, style_designator: SPLIT HELICAL-RIGHT HAND, material_thickness: 0.047 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: MIL. SPEC.

SPLIT LOCK WASHER. This part is cataloged in the U.S. Government catalog under NSN 5310-01-687-6943, 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
91475A391
NSN: 5310-01-687-6943
FSC: 5310 — Nuts and Washers
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
hole_diameter0.193 INCHES NOMINAL IN
outside_diameter0.334 INCHES NOMINAL IN
special_featuresFOR 10 SCREW SIZE
style_designatorSPLIT HELICAL-RIGHT HAND
material_thickness0.047 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyMIL. SPEC. SPLIT LOCK WASHER
NSN5310-01-687-6943
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 91475A391 · 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: 0.334 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.047 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.193 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.334 INCHES NOMINAL IN
MATERIAL THICKNESS0.047 INCHES NOMINAL IN
SPECIAL FEATURESFOR 10 SCREW SIZE
PART NAME ASSIGNED BY CONTROLLING AGENCYMIL. SPEC. SPLIT LOCK WASHER
HOLE DIAMETER0.193 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

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 91475A391?
91475A391 is a WASHER,LOCK.
What is the NSN for 91475A391?
91475A391 is cataloged in the U.S. Government catalog under NSN 5310-01-687-6943. 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.