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GR540K2 — PUSH ON NUT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

GR540K2: PUSH ON NUT.

The PUSH ON NUT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1050 OVERALL, nut_style: PUSH ON, nut_diameter: 0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN, surface_treatment: CADMIUM AND CHROMATE OVERALL, material_thickness: 0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN, specification/standard_data: 26512-GR540K MANUFACTURERS STANDARD. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-067-3419, 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
GR540K2
NSN: 5310-01-067-3419
FSC: 5310 — Nuts and Washers
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 1050 OVERALL
nut_stylePUSH ON
nut_diameter0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
surface_treatmentCADMIUM AND CHROMATE OVERALL
material_thickness0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
specification/standard_data26512-GR540K MANUFACTURERS STANDARD
mating_member_diameter_accommodated0.344 INCHES NOMINAL IN
surface_treatment_document_and_classificationQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
NSN5310-01-067-3419
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: GR540K2 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL THICKNESS: 0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
•
NUT DIAMETER: 0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
•
SPECIFICATION/STANDARD DATA: 26512-GR540K MANUFACTURERS STANDARD
•
MATING MEMBER DIAMETER ACCOMMODATED: 0.344 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
NUT STYLE: PUSH ON
•
MATERIAL: STEEL COMP 1050 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL THICKNESS0.015 INCHES MINIMUM AND 0.017 INCHES MAXIMUM IN
NUT DIAMETER0.497 INCHES MINIMUM AND 0.503 INCHES MAXIMUM IN
SPECIFICATION/STANDARD DATA26512-GR540K MANUFACTURERS STANDARD
MATING MEMBER DIAMETER ACCOMMODATED0.344 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
NUT STYLEPUSH ON
MATERIALSTEEL COMP 1050 OVERALL
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 GR540K2?
GR540K2 is a PUSH ON NUT.
What is the NSN for GR540K2?
GR540K2 is cataloged in the U.S. Government catalog under NSN 5310-01-067-3419. 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.