The O-Ring, cataloged under National Stock Number 5331-01-309-9759, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (CAGE 77640) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-309-9759 |
| Primary Part Number | 77640 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 77640 PRIMARY | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA) |
| 032645 PRIMARY | Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems (USA) |
| Reference | Meaning |
|---|---|
| 16479 | C/1 Advisory reference — outside the item-of-supply concept Hyster-Yale Group, Inc. Div Hyster-Yale Materials Handling |
| 16479 | 5/9 Secondary reference Hyster-Yale Group, Inc. |
NSN 5331-01-309-9759 is a O-Ring, manufactured by Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-309-9759 has 2 manufacturer part numbers on file: 77640 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems), 032645 (Zf Active Safety and Electronics Us Llc Div Trw Commercial Steering Systems).
3 possible matches (shared part number, not a government interchangeability claim): 1630-01-374-3764, 6515-01-516-1672, 6515-01-589-7032. Verify interchangeability with system specifications before substitution.
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.