PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BHMA-A156.20 A81221 12INHinge,strap

Builders Hardware Mfrs Assn Inc · NSN 5340-00-240-2580 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-240-2580 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-240-2580. Primary manufacturer part number: BHMA-A156.20 A81221 12IN.
Features
  • Hinge,strap — FSC 5340
  • Material Document and Classification: QQ-B-626, COMP 11 FED SPEC SINGLE MATERIAL RESPONSE AND FED STD 66, COMP 302, 303, OR 304 FED STD SINGLE MATERIAL RESPONSE PIN
  • Mounting Hole Quantity: 6
  • Surface Treatment: ZINC BODY
  • Material: COPPER ALLOY AND STEEL CORROSION RESISTING PIN
  • Reversible Feature: NOT INCLUDED
  • Style Designator: STRAP
  • Knuckle Quantity: 3
Applications
  • Applications requiring Copper Alloy and Steel Corrosion Resisting Pin construction
General Description

The Hinge,strap, cataloged under National Stock Number 5340-00-240-2580, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Builders Hardware Mfrs Assn Inc. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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: PR.

Technical Specifications
ParameterValue
NSN5340-00-240-2580
Primary Part NumberBHMA-A156.20 A81221 12IN
Item NameHinge,strap
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerBuilders Hardware Mfrs Assn Inc
StatusCANCELLED
Material Document and ClassificationQQ-B-626, COMP 11 FED SPEC SINGLE MATERIAL RESPONSE AND FED STD 66, COMP 302, 303, OR 304 FED STD SINGLE MATERIAL RESPONSE PIN
Mounting Hole Quantity6
Surface TreatmentZINC BODY
MaterialCOPPER ALLOY AND STEEL CORROSION RESISTING PIN
Reversible FeatureNOT INCLUDED
Style DesignatorSTRAP
Knuckle Quantity3
Performance TypeNOT RATED
Pin Center to Body Edge Distance12.000 INCHES NOMINAL IN
Surface Treatment Document and ClassificationASTM A153 ASSN STD SINGLE TREATMENT RESPONSE BODY
Body Width4.500 INCHES NOMINAL IN
Knuckle TypeFRICTION
Mounting Hole Diameter0.193 INCHES NOMINAL IN
MaterialSTEEL BODY
Material Thickness0.156 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Unit of IssuePR
Verified Substitutes 12
No Item Name Available
5340-00-240-2579ANSI/ BHMA A156.20- A81221 SUCCESSOR
Hinge,strap
Builders Hardware Mfrs Assn Inc
5340-00-200-7561 INTERCHANGEABLE
Hinge,tee
5340-00-235-1808BHMA-A156.20 A83162 3-1/4IN INTERCHANGEABLE
Hasp,hinged
Builders Hardware Mfrs Assn Inc
5340-00-240-2583BHMA-A156.20 A81222 3IN INTERCHANGEABLE
Hinge,strap
Builders Hardware Mfrs Assn Inc
5340-00-240-2584BHMA-A156.20 A81221 4IN INTERCHANGEABLE
Hinge,strap
Builders Hardware Mfrs Assn Inc
5340-00-240-2592 INTERCHANGEABLE
Hinge,tee
5340-00-240-2601 INTERCHANGEABLE
Hinge,tee
5340-00-240-2602 INTERCHANGEABLE
Hinge,tee
5340-00-243-3251BHMA-A156.20 A81211 8IN INTERCHANGEABLE
Hinge,strap
Builders Hardware Mfrs Assn Inc
Cross-Reference Index
Part NumberManufacturer
BHMA-A156.20 A81221 12IN PRIMARY Builders Hardware Mfrs Assn Inc (USA)
MS27972-28 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
A156.20 A81221 American National Standards Institute Incorporated Dba American National Standards Institute (USA)
BHMA-A156.20 Builders Hardware Mfrs Assn Inc (USA)
Related Parts
5340-00-664-4571SUCCESSOR
NO ITEM NAME AVAILABLE
5340-00-240-2579SUCCESSOR
HINGE,STRAP
ANSI/ BHMA A156.20- A81221
5340-00-200-7561INTERCHANGEABLE
HINGE,TEE
5340-00-235-1808INTERCHANGEABLE
HASP,HINGED
BHMA-A156.20 A83162 3-1/4IN
5340-00-240-2583INTERCHANGEABLE
HINGE,STRAP
BHMA-A156.20 A81222 3IN
5340-00-240-2584INTERCHANGEABLE
HINGE,STRAP
BHMA-A156.20 A81221 4IN
5340-00-240-2592INTERCHANGEABLE
HINGE,TEE
5340-00-240-2601INTERCHANGEABLE
HINGE,TEE
5340-00-240-2602INTERCHANGEABLE
HINGE,TEE
5340-00-243-3251INTERCHANGEABLE
HINGE,STRAP
BHMA-A156.20 A81211 8IN
5340-00-291-3580INTERCHANGEABLE
HINGE,STRAP
5340-00-663-1477INTERCHANGEABLE
HINGE,BUTT
BHMA-A156.20 A81313 1-1/4IN

Frequently Asked Questions

What is NSN 5340-00-240-2580?

NSN 5340-00-240-2580 is a Hinge,strap, manufactured by Builders Hardware Mfrs Assn Inc, classified under FSC 5340 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5340-00-240-2580?

NSN 5340-00-240-2580 has 4 cross-referenced part numbers: BHMA-A156.20 A81221 12IN (Builders Hardware Mfrs Assn Inc), MS27972-28 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), A156.20 A81221 (American National Standards Institute Incorporated Dba American National Standards Institute), BHMA-A156.20 (Builders Hardware Mfrs Assn Inc).

What NSN replaces 5340-00-240-2580?

There are 12 known substitutes for 5340-00-240-2580: 5340-00-664-4571, 5340-00-240-2579, 5340-00-200-7561 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BHMA-A156.20 A81221 12IN?

Key specifications for BHMA-A156.20 A81221 12IN: Material Document and Classification: QQ-B-626, COMP 11 FED SPEC SINGLE MATERIAL RESPONSE AND FED STD 66, COMP 302, 303, OR 304 FED STD SINGLE MATERIAL RESPONSE PIN; Mounting Hole Quantity: 6; Surface Treatment: ZINC BODY; Material: COPPER ALLOY AND STEEL CORROSION RESISTING PIN. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5340-00-240-2580 still in active supply?

NSN 5340-00-240-2580 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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