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PartsTable / COMPONENT / A6740
A6740 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,RECESSED is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1010 OVERALL, recess_depth: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, hole_diameter: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN, overall_height: 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN, outside_diameter: 2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN, style_designator: RECESSED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-495-9515, 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
A6740
NSN: 5310-00-495-9515
FSC: 5310
CAGE: 53335 — UNIVERSAL LOGISTICS CORP CLARK DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1010 OVERALL
recess_depth0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
hole_diameter1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
overall_height0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
outside_diameter2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
style_designatorRECESSED
material_thickness0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
material_document_and_classificationSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-495-9515
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A6740 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
MATERIAL: STEEL COMP 1010 OVERALL
•
MATERIAL THICKNESS: 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
•
RECESS DEPTH: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: RECESSED
•
OUTSIDE DIAMETER: 2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
•
HOLE DIAMETER: 1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL HEIGHT0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 1010 OVERALL
MATERIAL THICKNESS0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN
RECESS DEPTH0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
STYLE DESIGNATORRECESSED
OUTSIDE DIAMETER2.771 INCHES MINIMUM AND 2.791 INCHES MAXIMUM IN
HOLE DIAMETER1.115 INCHES MINIMUM AND 1.135 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
134SCAV218-1Interchangeable
interchangeable cross-reference
interchangeable
A914Interchangeable
interchangeable cross-reference
interchangeable
3632805-156920Interchangeable
interchangeable cross-reference
interchangeable
23386Interchangeable
interchangeable cross-reference
interchangeable
3215394Interchangeable
interchangeable cross-reference
interchangeable
15-81Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A6740?
A6740 is a WASHER,RECESSED.
What parts can replace A6740?
There are 9 known substitutes for A6740: 134SCAV218-1, A914, 3632805-156920 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A6740?
A6740 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-495-9515. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026