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00256 — GUN,ARC WELDING

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

00256: GUN,ARC WELDING.

The GUN,ARC WELDING is a the manufacturer industrial component. Key specifications include overall_width: 1.749 INCHES NOMINAL IN, conductor_form: STRANDED ALL CONDUCTORS, inclosure_type: FULLY INCLOSED, overall_height: 1.999 INCHES NOMINAL IN, overall_length: 76.037 INCHES IN, mounting_method: THREADED STUD(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-550-2992, 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
00256
NSN: 5310-00-550-2992
NIINs: 005502992, 011627183, 012611845
FSC: 5310 — Nuts and Washers
CAGE: 14153 — DEFENSE LOGISTICS AGENCY DBA DEFENSE SUPPLY CENTER PHILADELPHIA (USA)
SPECIFICATIONS
overall_width1.749 INCHES NOMINAL IN
conductor_formSTRANDED ALL CONDUCTORS
inclosure_typeFULLY INCLOSED
overall_height1.999 INCHES NOMINAL IN
overall_length76.037 INCHES IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating400.0 HERTZ NOMINAL SINGLE COMPONENT
special_features12 VALVE,1600 PSI,FLANGED,STEEL
style_designatorINTERNAL CONNECTORS
surface_treatmentSILVER CORE CONDUCTOR ALL CONDUCTORS
conductor_quantity6
nominal_thread_size0.138 INCHES SINGLE GROUP IN
NSN5310-00-550-2992
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 00256 · 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
SUBSTITUTES & CROSS-REFERENCES 1
7H3608Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 00256?
00256 is a GUN,ARC WELDING.
What parts can replace 00256?
There is 1 known substitute for 00256: 7H3608. Substitute compatibility should be verified for your specific system.
What is the NSN for 00256?
00256 is cataloged in the U.S. Government catalog under NSN 5310-00-550-2992. 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.