The Strap,retaining, cataloged under National Stock Number 5340-01-307-0187, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 11 specifications, 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-307-0187 |
| Primary Part Number | 5599490-1 |
| Item Name | Strap,retaining |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Mounting Hole Size | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Distance Between Mounting Hole Centers | 2.424 INCHES NOMINAL IN |
| Mounting Pad | NOT INCLUDED |
| Style Designator | STRAIGHT ARCH |
| Material Document and Classification | AMS 3303 ASSN STD SINGLE MATERIAL RESPONSE CUSHIONING |
| Material Thickness | 0.032 INCHES NOMINAL IN |
| Cushion | INCLUDED |
| Distance Between Base and Inside of Arch | 1.000 INCHES NOMINAL IN |
| Material | STEEL LOCATION NOT OTHERWISE SPECIFIED |
| Material | RUBBER SILICONE CLASS Q CUSHIONING |
| Inside Diameter/arch Length | 1.620 INCHES NOMINAL 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 |
NSN 5340-01-307-0187 is a Strap,retaining, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-307-0187 has 2 manufacturer part numbers on file: 5599490-1 (Lockheed Martin Corporation Div Rotary and Mission Systems), 5599490-1 (Naval Sea Systems Command).
Key specifications for 5599490-1: Mounting Hole Size: 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN; Distance Between Mounting Hole Centers: 2.424 INCHES NOMINAL IN; Mounting Pad: NOT INCLUDED; Style Designator: STRAIGHT ARCH. 11 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.