The Lock,valve Spring Retainer, cataloged under National Stock Number 2805-00-700-6839, 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 U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2805-00-700-6839 |
| Primary Part Number | 7006839 |
| Item Name | Lock,valve Spring Retainer |
| FSC / FSG | 2805 / 28 — Gasoline Reciprocating Engines, Except Aircraft; and Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| FSC Application Data | EXHAUST VALVE,GASOLINE ENGINE |
| First Ridge Radius | 0.016 INCHES NOMINAL IN |
| Minimum Inside Diameter | 0.546 INCHES IN |
| Inside Diameter Top Radius | 0.020 INCHES NOMINAL IN |
| Thread Provision | UNTHREADED |
| Largest Outside Diameter | 0.8414 INCHES NOMINAL IN |
| Largest Inside Diameter | 0.650 INCHES MINIMUM AND 0.660 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-624,FS8740 FED SPEC SINGLE MATERIAL RESPONSE |
| Outside Included Angle in Deg | 11.98 |
| Casehardening Indicator | NOT CASEHARDENED |
| Inside Diameter Bottom Radius | 0.020 INCHES NOMINAL IN |
| Material | STEEL COMP 8740 |
| Metallic Hardness Rating | 46.0 MINIMUM ROCKWELL C AND 50.0 MAXIMUM 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 |
NSN 2805-00-700-6839 is a Lock,valve Spring Retainer, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2805, Gasoline Reciprocating Engines, Except Aircraft; and Components. Status: active.
NSN 2805-00-700-6839 has 3 manufacturer part numbers on file: 7006839 (U S Army Tank Automotive Command Amsta-Im-Mm), 7008421 (U S Army Tank Automotive Command Amsta-Im-Mm), 202159 (Renk America Llc Div Renk America).
2 possible matches (shared part number, not a government interchangeability claim): 5360-01-264-0148, 5330-01-500-9863. Verify interchangeability with system specifications before substitution.
Key specifications for 7006839: Overall Height: 0.558 INCHES NOMINAL IN; FSC Application Data: EXHAUST VALVE,GASOLINE ENGINE; First Ridge Radius: 0.016 INCHES NOMINAL IN; Minimum Inside Diameter: 0.546 INCHES IN. 13 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.