The Ring,piston, cataloged under National Stock Number 4310-01-086-8668, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Dover Resources Inc Dba C. Lee Cook Div. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 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 | 4310-01-086-8668 |
| Primary Part Number | AGA-10074 |
| Item Name | Ring,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Dover Resources Inc Dba C. Lee Cook Div |
| Status | ACTIVE |
| Surface Treatment Document and Classification | AMS2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material Document and Classification | AMS7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | PLAIN RECTANGULAR, STRAIGHT FACE |
| Joint Style | STEP JOINT |
| Radial Wall Thickness | 0.0890 INCHES NOMINAL IN |
| Ring Style | CONCENTRIC |
| Surface Treatment | PHOSPHATE MANGANESE OVERALL |
| Standard Bore Diameter | 3.494 INCHES IN |
| Material | IRON OVERALL |
| 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 |
|---|---|
| GR540BK | Northrop Grumman Systems Corporation (USA) |
| GR540BK1 | Northrop Grumman Systems Corporation (USA) |
| AGA-10074 PRIMARY | Dover Resources Inc Dba C. Lee Cook Div (USA) |
| AGA-10074 PRIMARY | Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent (USA) |
| 73616 PRIMARY | Kaydon Ring & Seal Inc Dba Skf Precision Technologies (USA) |
NSN 4310-01-086-8668 is a Ring,piston, manufactured by Dover Resources Inc Dba C. Lee Cook Div, classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-01-086-8668 has 5 manufacturer part numbers on file: GR540BK (Northrop Grumman Systems Corporation), GR540BK1 (Northrop Grumman Systems Corporation), AGA-10074 (Dover Resources Inc Dba C. Lee Cook Div), AGA-10074 (Sargent Aerospace & Defense, Llc Dba Airtomic Div Sargent), 73616 (Kaydon Ring & Seal Inc Dba Skf Precision Technologies).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-559-8101. Verify interchangeability with system specifications before substitution.
Key specifications for AGA-10074: Surface Treatment Document and Classification: AMS2481 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Overall Width: 0.0910 INCHES NOMINAL IN; Material Document and Classification: AMS7310 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: PLAIN RECTANGULAR, STRAIGHT FACE. 9 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.