The Lock,valve Spring Retainer, cataloged under National Stock Number 2805-00-386-3376, is classified within Federal Supply Class 2805 (Gasoline Reciprocating Engines, Except Aircraft; and Components) of the Engines, Turbines, and Components group. The manufacturer of record is Brinkley Technology Group Llc Dba Hercules Manufacturing. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2805-00-386-3376 |
| Primary Part Number | 221813A |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | Brinkley Technology Group Llc Dba Hercules Manufacturing |
| Status | ACTIVE |
| Minimum Inside Diameter | 0.343 INCHES IN |
| Thread Provision | UNTHREADED |
| Largest Outside Diameter | 0.678 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN |
| Largest Outside Diameter Chamfer Angle in Deg | 45.0 |
| Largest Top Countersink Diameter | 0.416 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Style Designator | STRAIGHT BORE-ALL CORNERS CHAMFERED-STRAIGHT SIDES |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE |
| Casehardening Indicator | NOT CASEHARDENED |
| Largest Bottom Countersink Diameter | 0.416 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Material | STEEL |
| Metallic Hardness Rating | 60.0 MINIMUM ROCKWELL C |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 221813A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| 32024A PRIMARY | Brinkley Technology Group Llc Dba Hercules Manufacturing (USA) |
| Reference | Meaning |
|---|---|
| 221813A | 5/9 Secondary reference Hercules Engine Co Inc |
| 32024A | 5/9 Secondary reference Hercules Engine Co Inc |
NSN 2805-00-386-3376 is a Lock,valve Spring Retainer, manufactured by Brinkley Technology Group Llc Dba Hercules Manufacturing, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-386-3376 has 2 manufacturer part numbers on file: 221813A (Brinkley Technology Group Llc Dba Hercules Manufacturing), 32024A (Brinkley Technology Group Llc Dba Hercules Manufacturing).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-514-4334. Verify interchangeability with system specifications before substitution.
Key specifications for 221813A: Overall Height: 0.125 INCHES NOMINAL IN; Minimum Inside Diameter: 0.343 INCHES IN; Thread Provision: UNTHREADED; Largest Outside Diameter: 0.678 INCHES MINIMUM AND 0.682 INCHES MAXIMUM IN. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.