Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW
The 4-40UNCX1/4 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 5305-00-080-0064, 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
4-40UNCX1/4
NSN:5305-00-080-0064 FSC:5305 CAGE:U1811 — UNBRAKO (A DIVISION OF S P S TECHNOLOGIES LTD) (GBR)
SPECIFICATIONS
Part Number
4-40UNCX1/4
NSN
5305-00-080-0064
COMPONENT DIAGRAM
KEY FEATURES
•
MINIMUM YIELD STRENGTH: 130000 POUNDS PER SQUARE INCH LBS
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
•
INTERNAL DRIVE STYLE: HEXAGON
•
THREAD QUANTITY PER INCH: 40
•
HARDNESS RATING: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
•
MINIMUM TENSILE STRENGTH: 160000 POUNDS PER SQUARE INCH LBS
TECHNICAL CHARACTERISTICS (FLIS)
MINIMUM YIELD STRENGTH
130000 POUNDS PER SQUARE INCH LBS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MATERIAL
STEEL OVERALL
SURFACE TREATMENT
CADMIUM AND CHROMATE OVERALL
INTERNAL DRIVE STYLE
HEXAGON
THREAD QUANTITY PER INCH
40
HARDNESS RATING
36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL
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FREQUENTLY ASKED QUESTIONS
What is 4-40UNCX1/4?
4-40UNCX1/4 is a 4-40UNCX1/4.
What parts can replace 4-40UNCX1/4?
There are 15 known substitutes for 4-40UNCX1/4: A-A-410, 31185, 65875 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-40UNCX1/4?
4-40UNCX1/4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-00-080-0064. This indicates validated use in U.S. government and defense supply chains.
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