PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-B-543Buckle

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5340-00-297-6627 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-297-6627 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-297-6627. Primary manufacturer part number: MIL-B-543.
Features
  • Buckle — FSC 5340
  • Insignia: NOT INCLUDED
  • Enameled Feature: NOT INCLUDED
  • Strap Accommodation Width: 1.250 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
  • 2 verified cross-references
  • Primary manufacturer: Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Buckle, cataloged under National Stock Number 5340-00-297-6627, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5340-00-297-6627
Primary Part NumberMIL-B-543
Item NameBuckle
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
InsigniaNOT INCLUDED
Enameled FeatureNOT INCLUDED
Strap Accommodation Width1.250 INCHES MINIMUM AND 1.310 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
No Item Name Available
5340-00-157-7987 INTERCHANGEABLE
Buckle
5340-00-290-0837 INTERCHANGEABLE
Buckle
5340-00-290-0847 INTERCHANGEABLE
Buckle
5340-00-290-0939 INTERCHANGEABLE
Buckle
5340-00-290-0948 INTERCHANGEABLE
Buckle
5340-00-290-0952 INTERCHANGEABLE
Buckle
5340-00-290-0967 INTERCHANGEABLE
Buckle
5340-00-290-0970 INTERCHANGEABLE
Buckle
5340-00-290-73813105-1 INTERCHANGEABLE
Buckle
Buckles International, Inc.
Cross-Reference Index
Part NumberManufacturer
MIL-B-543 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MS51927-4 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5340-00-297-6622SUCCESSOR
NO ITEM NAME AVAILABLE
5340-00-157-7987INTERCHANGEABLE
BUCKLE
5340-00-290-0837INTERCHANGEABLE
BUCKLE
5340-00-290-0847INTERCHANGEABLE
BUCKLE
5340-00-290-0939INTERCHANGEABLE
BUCKLE
5340-00-290-0948INTERCHANGEABLE
BUCKLE
5340-00-290-0952INTERCHANGEABLE
BUCKLE
5340-00-290-0967INTERCHANGEABLE
BUCKLE
5340-00-290-0970INTERCHANGEABLE
BUCKLE
5340-00-290-7381INTERCHANGEABLE
BUCKLE
3105-1
5340-00-297-6631INTERCHANGEABLE
BUCKLE
5340-00-297-6645INTERCHANGEABLE
BUCKLE

Frequently Asked Questions

What is NSN 5340-00-297-6627?

NSN 5340-00-297-6627 is a Buckle, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-297-6627?

NSN 5340-00-297-6627 has 2 cross-referenced part numbers: MIL-B-543 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MS51927-4 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5340-00-297-6627?

There are 12 known substitutes for 5340-00-297-6627: 5340-00-297-6622, 5340-00-157-7987, 5340-00-290-0837 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-B-543?

Key specifications for MIL-B-543: Insignia: NOT INCLUDED; Overall Length: 0.880 INCHES NOMINAL IN; Special Features: BUCKLE STYLE DESIGNATOR B19 OR B23; Enameled Feature: NOT INCLUDED. 6 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-297-6627 still in active supply?

NSN 5340-00-297-6627 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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