The Retainer,valve Spring, cataloged under National Stock Number 4810-00-741-7971, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is David Brown Hydraulics Inc Dba Hydreco. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-741-7971 |
| Primary Part Number | 514X221 |
| Item Name | Retainer,valve Spring |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | David Brown Hydraulics Inc Dba Hydreco |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,3.125 IN. O/A LG,1.750 IN. HEX OD,ONE END DRILLED 1-1/32 BY 2-9/16 DEEP,1-1/2-12 NF2 THD,1.4403/1.4459 PITCH DIA,OTHER END 1-1/4 IN. LG,1/8 BY 45 DEG CHAMFER,1-5/8 IN. O/A DIA,3/8-24 NF2 TAP .3479/.3512 PITCH DIA IN |
| 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 |
|---|---|
| 514X221 PRIMARY | David Brown Hydraulics Inc Dba Hydreco (USA) |
| 14072P11 | Taylor Machine Works Inc (USA) |
| 7417971 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| HECR514X221 | C/1 Advisory reference — outside the item-of-supply concept Volvo Construction Equipment North America, Llc |
| HECR514X221 | 5/9 Secondary reference Vme Americas Inc Sub of Vme Group N V |
| 514X221 | 5/9 Secondary reference General Signal Corp |
| 915553 | 5/9 Secondary reference Sasco Inc Canadian Div |
NSN 4810-00-741-7971 is a Retainer,valve Spring, manufactured by David Brown Hydraulics Inc Dba Hydreco, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-741-7971 has 3 manufacturer part numbers on file: 514X221 (David Brown Hydraulics Inc Dba Hydreco), 14072P11 (Taylor Machine Works Inc), 7417971 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 514X221: General Characteristics Item Description: CRES,3.125 IN. O/A LG,1.750 IN. HEX OD,ONE END DRILLED 1-1/32 BY 2-9/16 DEEP,1-1/2-12 NF2 THD,1.4403/1.4459 PITCH DIA,OTHER END 1-1/4 IN. LG,1/8 BY 45 DEG CHAMFER,1-5/8 IN. O/A DIA,3/8-24 NF2 TAP .3479/.3512 PITCH DIA IN. 1 specification is 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.