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PartsTable / COMPONENT / 1785278
1785278 ✓ 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 PIN,LOCK is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 260, construction: LAMINATED, hole_diameter: 0.310 INCHES NOMINAL IN, overall_width: 0.750 INCHES NOMINAL IN, overall_length: 1.500 INCHES NOMINAL IN, features_provided: SEPARABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-516-0353, 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
1785278
NSN: 5315-00-516-0353
FSC: 5315
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 260
constructionLAMINATED
hole_diameter0.310 INCHES NOMINAL IN
overall_width0.750 INCHES NOMINAL IN
overall_length1.500 INCHES NOMINAL IN
features_providedSEPARABLE
bolt_hole_quantity2
lamination_quantity41
lamination_thickness0.003 INCHES NOMINAL IN
material_document_and_classificationQQ-B-613,1/4H FED SPEC SINGLE MATERIAL RESPONSE
center_to_center_distance_between_bolt_holes_along_length1.000 INCHES NOMINAL IN
NSN5315-00-516-0353
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1785278 · 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
•
PRONG LENGTH: 0.750 INCHES NOMINAL IN
•
WIRE STOCK DIAMETER: 0.054 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
PRONG LENGTH0.750 INCHES NOMINAL IN
WIRE STOCK DIAMETER0.054 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
160320R1Interchangeable
interchangeable cross-reference
interchangeable
1829L194Interchangeable
interchangeable cross-reference
interchangeable
823B1Interchangeable
interchangeable cross-reference
interchangeable
8344934Interchangeable
interchangeable cross-reference
interchangeable
30592-3Interchangeable
interchangeable cross-reference
interchangeable
ABA400AC2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1785278?
1785278 is a PIN,LOCK.
What parts can replace 1785278?
There are 15 known substitutes for 1785278: 160320R1, 1829L194, 823B1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1785278?
1785278 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-516-0353. 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