The Strap,retaining, cataloged under National Stock Number 5340-01-491-6504, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5340-01-491-6504 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| Mounting Hole Size | 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN |
| Distance Between Mounting Hole Centers | 4.006 INCHES MINIMUM AND 4.026 INCHES MAXIMUM IN |
| Mounting Pad | NOT INCLUDED |
| Supplementary Features | TEMPERATURE RANGE: -320 DEG. F. TO 450 DEG. F. |
| Style Designator | SADDLE ARCH |
| Material Thickness | 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM IN |
| Cushion | INCLUDED |
| Distance Between Base and Inside of Arch | 3.123 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE |
| Material | STEEL COMP 321 LOCATION NOT OTHERWISE SPECIFIED |
| Material | PLASTIC TETRAFLUOROETHYLENE CUSHIONING |
| Inside Diameter/arch Length | 2.990 INCHES MINIMUM AND 3.010 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| NASM85449/4 | 3/1 Design control — primary reference U.S. Government activity |
| M85449/4-48 | 5/9 Secondary reference U.S. Government activity |
| M85449/4-48 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-491-6504 is a Strap,retaining, classified under FSC 5340, Hardware, Commercial. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 5340-01-491-7473, 5340-01-528-7504. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-491-6504: Mounting Hole Size: 0.213 INCHES MINIMUM AND 0.223 INCHES MAXIMUM IN; Distance Between Mounting Hole Centers: 4.006 INCHES MINIMUM AND 4.026 INCHES MAXIMUM IN; Mounting Pad: NOT INCLUDED; Supplementary Features: TEMPERATURE RANGE: -320 DEG. F. TO 450 DEG. F.. 12 specifications are 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.