The Strap,retaining, cataloged under National Stock Number 5340-01-161-1720, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-161-1720 |
| Primary Part Number | 558290 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Mounting Hole Size | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Mounting Pad | NOT INCLUDED |
| Style Designator | U |
| Material Thickness | 0.086 INCHES MINIMUM AND 0.102 INCHES MAXIMUM IN |
| Cushion | NOT INCLUDED |
| Material | STEEL COMP 410 LOCATION NOT OTHERWISE SPECIFIED |
| Center to Center Distance Between Arch and Mounting Hole | 0.700 INCHES NOMINAL IN |
| Inside Diameter/arch Length | 1.615 INCHES MINIMUM AND 1.635 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 |
| Part Number | Manufacturer |
|---|---|
| 558290 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| Reference | Meaning |
|---|---|
| 558290 | 5/9 Secondary reference U.S. Government activity |
NSN 5340-01-161-1720 is a Strap,retaining, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-161-1720 has 1 manufacturer part number on file: 558290 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 558290: Mounting Hole Size: 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN; Mounting Pad: NOT INCLUDED; Style Designator: U; Overall Length: 0.950 INCHES NOMINAL IN. 8 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.