The Pin,piston, cataloged under National Stock Number 4310-00-903-7174, is classified within Federal Supply Class 4310 (Compressors and Vacuum Pumps) of the Pumps and Compressors group. The manufacturer of record is Cummins Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4310-00-903-7174 |
| Primary Part Number | 11981000 |
| Item Name | Pin,piston |
| FSC / FSG | 4310 / 43 — Compressors and Vacuum Pumps |
| Manufacturer | Cummins Inc. |
| Status | ACTIVE |
| Countersink Angle in Deg | 45.0 |
| FSC Application Data | COMPRESSOR ASSEMBLY,AIR BRAKE SYSTEM |
| Body Style | PLAIN ENDS |
| Bore Style | INSIDE CHAMFER STRAIGHT-THRU BORE |
| Material Document and Classification | FED STD 66 FED STD SINGLE MATERIAL RESPONSE OR AISI 1016 ASSN STD SINGLE MATERIAL RESPONSE OR SAE 1016 ASSN STD SINGLE MATERIAL RESPONSE |
| Outside Diameter | 0.68740 INCHES MINIMUM AND 0.68760 INCHES MAXIMUM IN |
| Body Length | 2.7450 INCHES MINIMUM AND 2.7500 INCHES MAXIMUM IN |
| Casehardening Indicator | CASEHARDENED |
| Bore Diameter | 0.4550 INCHES MINIMUM AND 0.4650 INCHES MAXIMUM IN |
| Material | STEEL COMP 1016 |
| 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 |
|---|---|
| 11981000 PRIMARY | Cummins Inc. (USA) |
| Reference | Meaning |
|---|---|
| 119810 | 5/9 Secondary reference La Gary Co |
| 119810 | 5/9 Secondary reference Cummins Inc. |
NSN 4310-00-903-7174 is a Pin,piston, manufactured by Cummins Inc., classified under FSC 4310, Compressors and Vacuum Pumps. Status: active.
NSN 4310-00-903-7174 has 1 manufacturer part number on file: 11981000 (Cummins Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5915-01-536-4387. Verify interchangeability with system specifications before substitution.
Key specifications for 11981000: Countersink Angle in Deg: 45.0; FSC Application Data: COMPRESSOR ASSEMBLY,AIR BRAKE SYSTEM; Body Style: PLAIN ENDS; Bore Style: INSIDE CHAMFER STRAIGHT-THRU BORE. 10 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.