Material determines chemical compatibility Standard durometer is 70 Shore A
Wrong material = catastrophic seal failure
PRODUCT OVERVIEW
The BUCKLE is a the manufacturer industrial component. Key specifications include color: BLACK, insignia: INCLUDED, material: STEEL BODY, overall_width: 1.500 INCHES NOMINAL IN, overall_length: 1.500 INCHES NOMINAL IN, enameled_feature: INCLUDED. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-157-7987, 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
MIL-B-543
NSN:5340-00-157-7987 FSC:5340 CAGE:81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
color
BLACK
insignia
INCLUDED
material
STEEL BODY
overall_width
1.500 INCHES NOMINAL IN
overall_length
1.500 INCHES NOMINAL IN
enameled_feature
INCLUDED
specific_usage_design
FOR USE ON ITEMS OF EQUIPMENT HAVING STRAP-BUCKLE-TYPE FASTENERS
buckle_style_designator
END BAR WITH TONGUE
strap_accommodation_width
1.000 INCHES NOMINAL IN
NSN
5340-00-157-7987
COMPONENT DIAGRAM
KEY FEATURES
•
ENAMELED FEATURE: INCLUDED
•
SPECIFICATION/STANDARD DATA: 81349-MIL-543 GOVERNMENT SPECIFICATION
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 TEMP 4 OR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
COLOR: BLACK
•
INSIGNIA: NOT INCLUDED
•
MATERIAL: STEEL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3 STYLE AND 3 CLASS AND 0.625 SIZE
•
BUCKLE STYLE DESIGNATOR: DOUBLE BAR-TONGUELESS
TECHNICAL CHARACTERISTICS (FLIS)
ENAMELED FEATURE
INCLUDED
SPECIFICATION/STANDARD DATA
81349-MIL-543 GOVERNMENT SPECIFICATION
MATERIAL DOCUMENT AND CLASSIFICATION
QQ-S-698 TEMP 4 OR 5 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
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FREQUENTLY ASKED QUESTIONS
What is MIL-B-543?
MIL-B-543 is a BUCKLE.
What parts can replace MIL-B-543?
There are 15 known substitutes for MIL-B-543: MIL-B-543, MS51944-3, MS51944-9 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-B-543?
MIL-B-543 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5340-00-157-7987. This indicates validated use in U.S. government and defense supply chains.
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