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 M45913/4-4CG8Z is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-548-1269, 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
M45913/4-4CG8Z
NSN:5310-01-548-1269 FSC:5310 CAGE:81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part Number
M45913/4-4CG8Z
NSN
5310-01-548-1269
COMPONENT DIAGRAM
KEY FEATURES
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD CLASS: 3B
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
SPECIFICATION/STANDARD DATA: 81349 - MIL-DTL-45913/4A GOVERNMENT SPECIFICATION A
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995, GRADE 8 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM B633, TYPE II, FE/ZN 8 ASSN STD ALL TREATMENT RESPONSES OVERALL
•
HARDNESS RATING: 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE
0.250 INCHES IN
THREAD CLASS
3B
MATERIAL
STEEL OVERALL
SURFACE TREATMENT
ZINC OVERALL
SPECIFICATION/STANDARD DATA
81349 - MIL-DTL-45913/4A GOVERNMENT SPECIFICATION A
MATERIAL DOCUMENT AND CLASSIFICATION
SAE J995, GRADE 8 NATIONAL STD/SPEC ALL MATERIAL RESPONSES OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
ASTM B633, TYPE II, FE/ZN 8 ASSN STD ALL TREATMENT RESPONSES OVERALL
HARDNESS RATING
33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM
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FREQUENTLY ASKED QUESTIONS
What is M45913/4-4CG8Z?
M45913/4-4CG8Z is a M45913/4-4CG8Z.
What parts can replace M45913/4-4CG8Z?
There are 22 known substitutes for M45913/4-4CG8Z: MS51943-4, 5310PL0918864, M45913/3-5FG8P and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M45913/4-4CG8Z?
M45913/4-4CG8Z is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-548-1269. This indicates validated use in U.S. government and defense supply chains.
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