PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 5256-1
5256-1 ✓ 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 TRANSFORMER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: STRIP, nut_width: 0.312 INCHES NOMINAL IN, face_width: 0.9840 INCHES NOMINAL IN, nut_length: 1.188 INCHES NOMINAL IN, overall_width: 1.453 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-590-8021, 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
5256-1
NSN: 5310-00-590-8021
FSC: 5310
CAGE: 82423 — KLEINSCHMIDT INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSTRIP
nut_width0.312 INCHES NOMINAL IN
face_width0.9840 INCHES NOMINAL IN
nut_length1.188 INCHES NOMINAL IN
overall_width1.453 INCHES NOMINAL IN
overall_height0.812 INCHES NOMINAL IN
overall_length4.031 INCHES NOMINAL IN
outside_diameter2.04700 INCHES NOMINAL IN
special_featuresDIODE 32,LAMP 32,PRINTED WIRING BOARD 1
surface_treatmentPHOSPHATE OR PHOSPHATE MANGANESE OVERALL
material_thickness0.093 INCHES NOMINAL IN
NSN5310-00-590-8021
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5256-1 · 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
•
NUT LENGTH: 1.188 INCHES NOMINAL IN
•
APERTURE CENTER TO CENTER DISTANCE: 0.625 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-P-16232 TYPE M CLASS 2 MIL SPEC ALL TREATMENT RESPONSES OVERALL
•
SURFACE TREATMENT: PHOSPHATE OR PHOSPHATE MANGANESE OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 TEMPER 1/2 HARD NO 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NUT WIDTH: 0.312 INCHES NOMINAL IN
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.138 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT LENGTH1.188 INCHES NOMINAL IN
APERTURE CENTER TO CENTER DISTANCE0.625 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-P-16232 TYPE M CLASS 2 MIL SPEC ALL TREATMENT RESPONSES OVERALL
SURFACE TREATMENTPHOSPHATE OR PHOSPHATE MANGANESE OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 TEMPER 1/2 HARD NO 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NUT WIDTH0.312 INCHES NOMINAL IN
MATING MEMBER DIAMETER ACCOMMODATED0.138 INCHES NOMINAL IN
MATERIAL THICKNESS0.093 INCHES NOMINAL IN
NUT STYLESTRIP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
5256-1Interchangeable
interchangeable cross-reference
interchangeable
P1678Interchangeable
interchangeable cross-reference
interchangeable
5256Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 5256-1?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 5256-1?
5256-1 is a TRANSFORMER.
What parts can replace 5256-1?
There are 3 known substitutes for 5256-1: 5256-1, P1678, 5256. Substitute compatibility should be verified for your specific system.
What is the NSN for 5256-1?
5256-1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-590-8021. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 5256-1

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026