The Back Rest,gunners Seat, cataloged under National Stock Number 2540-00-568-8671, is classified within Federal Supply Class 2540 (Vehicular Furniture and Accessories) of the Vehicular Equipment Components group. The manufacturer of record is Milsco Mfg Co Unit of Jason Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 2540-00-568-8671 |
| Primary Part Number | B191 |
| Item Name | Back Rest,gunners Seat |
| FSC / FSG | 2540 / 25 — Vehicular Furniture and Accessories |
| Manufacturer | Milsco Mfg Co Unit of Jason Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSIST OF 1 GUNNERS SEAT BACKREST PLATE 8727942,2 WELDING BOLTS 218343,COVERING TO BE BLACK KOROSEAL COATED 24 OZ BELTING DUCK,FILLER TO BE CELLULAR RUBBER GRADE SC 12 ABF,MIL-C-3133 SPEC,CEMENT MIL-A-13554 SPEC OZ |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
NSN 2540-00-568-8671 is a Back Rest,gunners Seat, manufactured by Milsco Mfg Co Unit of Jason Inc, classified under FSC 2540, Vehicular Furniture and Accessories. Status: active.
NSN 2540-00-568-8671 has 2 manufacturer part numbers on file: 8726616 (U S Army Tank Automotive Command Amsta-Im-Mm), B191 (Milsco Mfg Co Unit of Jason Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5950-00-949-4105, 5330-01-004-4897. Verify interchangeability with system specifications before substitution.
Key specifications for B191: General Characteristics Item Description: CONSIST OF 1 GUNNERS SEAT BACKREST PLATE 8727942,2 WELDING BOLTS 218343,COVERING TO BE BLACK KOROSEAL COATED 24 OZ BELTING DUCK,FILLER TO BE CELLULAR RUBBER GRADE SC 12 ABF,MIL-C-3133 SPEC,CEMENT MIL-A-13554 SPEC OZ. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.