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742327 — WASHER,KEY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

742327: WASHER,KEY.

The WASHER,KEY is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, hole_diameter: 2.657 INCHES NOMINAL IN, outside_diameter: 3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN, external_prebent_key_width: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN, external_prebent_key_length: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN, criticality_code_justification: FEAT. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-012-2049, 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
742327
NSN: 5310-01-012-2049
FSC: 5310 — Nuts and Washers
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
hole_diameter2.657 INCHES NOMINAL IN
outside_diameter3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
special_featuresINTERGAL PART OF THE REAR GEARBOX HOUSING. FAILURE OF THIS WASHER COULD RESULT IN DEGRADED PERFORMANCE AND/OR FAILURE OF THE WEAPON SYSTEM OPERATION.
external_prebent_key_width0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
external_prebent_key_length0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
criticality_code_justificationFEAT
material_document_and_classificationAMS5040 ASSN STD 1ST MATERIAL RESPONSE OR AMS5042 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-012-2049
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 742327 · 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
•
EXTERNAL PREBENT KEY LENGTH: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS5040 ASSN STD 1ST MATERIAL RESPONSE OR AMS5042 ASSN STD 2ND MATERIAL RESPONSE OVERALL
•
OUTSIDE DIAMETER: 3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
•
EXTERNAL PREBENT KEY WIDTH: 0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1010 OVERALL
•
HOLE DIAMETER: 2.657 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
EXTERNAL PREBENT KEY LENGTH0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
CRITICALITY CODE JUSTIFICATIONFEAT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS5040 ASSN STD 1ST MATERIAL RESPONSE OR AMS5042 ASSN STD 2ND MATERIAL RESPONSE OVERALL
OUTSIDE DIAMETER3.140 INCHES MINIMUM AND 3.160 INCHES MAXIMUM IN
SPECIAL FEATURESINTERGAL PART OF THE REAR GEARBOX HOUSING. FAILURE OF THIS WASHER COULD RESULT IN DEGRADED PERFORMANCE AND/OR FAILURE OF THE WEAPON SYSTEM OPERATION.
EXTERNAL PREBENT KEY WIDTH0.247 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1010 OVERALL
HOLE DIAMETER2.657 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
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 742327?
742327 is a WASHER,KEY.
What is the NSN for 742327?
742327 is cataloged in the U.S. Government catalog under NSN 5310-01-012-2049. 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.