The Seat,ball Socket, cataloged under National Stock Number 5340-01-283-2512, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Syn-Tech System, Inc.. Government technical data includes 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-283-2512 |
| Primary Part Number | 8644839 |
| Item Name | Seat,ball Socket |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Syn-Tech System, Inc. |
| Status | ACTIVE |
| Radius | 0.726 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN |
| Style Designator | SEAT |
| Outside Diameter | 1.063 INCHES NOMINAL IN |
| Material | COPPER ALLOY |
| Hole Diameter | 0.502 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 8644839 PRIMARY | Syn-Tech System, Inc. (USA) |
| Reference | Meaning |
|---|---|
| X8644839 | 5/9 Secondary reference Air Armament Center/ En |
| 8644839 | 5/9 Secondary reference Air Armament Center/ En |
NSN 5340-01-283-2512 is a Seat,ball Socket, manufactured by Syn-Tech System, Inc., classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-283-2512 has 1 manufacturer part number on file: 8644839 (Syn-Tech System, Inc.).
Key specifications for 8644839: Overall Height: 0.234 INCHES NOMINAL IN; Radius: 0.726 INCHES MINIMUM AND 0.730 INCHES MAXIMUM IN; Style Designator: SEAT; Outside Diameter: 1.063 INCHES NOMINAL IN. 5 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.