The Retainer,sear Spring, cataloged under National Stock Number 5340-01-209-9973, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5340-01-209-9973 |
| Item Name | Retainer,sear Spring |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| General Characteristics Item Description | MATL,CRES 17-4 PH PER AMS 5643,PASSTVATE PER EF 43-3 EDO,STYLE,STREIGHT WTH SHOULDER,BODY O/D 0.200 IN. NOM,O/A HGT 0.220 IN.,SHOULDER DIA 0.380 IN.,THK 0.060 IN.,BODY INSIDE DIA THRU 0.118 IN. NOM,SHOULDER TO ONE END 0.100 IN.,SHOULDER TO OPP END 0.060 IN. IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 109730-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-209-9973 is a Retainer,sear Spring, classified under FSC 5340, Hardware, Commercial. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1680-01-524-0854. Verify interchangeability with system specifications before substitution.
Key specifications for 5340-01-209-9973: General Characteristics Item Description: MATL,CRES 17-4 PH PER AMS 5643,PASSTVATE PER EF 43-3 EDO,STYLE,STREIGHT WTH SHOULDER,BODY O/D 0.200 IN. NOM,O/A HGT 0.220 IN.,SHOULDER DIA 0.380 IN.,THK 0.060 IN.,BODY INSIDE DIA THRU 0.118 IN. NOM,SHOULDER TO ONE END 0.100 IN.,SHOULDER TO OPP END 0.060 IN. IN; End Item Identification: RETAINER,SEAR SPRING,HMERU. 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.