The Sleeve,seal,coupler, cataloged under National Stock Number 5330-01-277-8887, is classified within Federal Supply Class 5330 (Packing and Gasket Materials) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5330-01-277-8887 |
| Primary Part Number | ST7M389-20-12 |
| Item Name | Sleeve,seal,coupler |
| FSC / FSG | 5330 / 53 — Packing and Gasket Materials |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Cross-Sectional Shape Style | SPHERICAL |
| Cross-Sectional Length | 2.970 INCHES MINIMUM AND 3.030 INCHES MAXIMUM IN |
| Cross Section Inside Diameter | 2.470 INCHES MINIMUM AND 2.530 INCHES MAXIMUM IN |
| Specification/standard Data | 76301-ST7-389 MANUFACTURERS STANDARD |
| Cross Section Outside Diameter | 2.540 INCHES MINIMUM AND 2.640 INCHES MAXIMUM IN |
| Material | COTTON AND GLASS AND RUBBER SILICONE CLASS Q OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ST7M389-20-12 | Kirkhill, Inc. Dba Ta Aerospace Co Div Kirkhill Inc, Sfs Division (USA) |
| ST7M389-20-12 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST7M389-20-12 | 5/2 Secondary reference U.S. Government activity |
| ST7M389-20-12 | 5/2 Secondary reference U.S. Government activity |
| SF11-1223-20-12 | 5/9 Secondary reference Kirkhill, Inc. Dba Ta Aerospace Co Div Kirkhill Inc, Sfs Division |
| AD1199-20-12 | 5/9 Secondary reference U.S. Government activity |
| AD1199-20-12 | 5/9 Secondary reference Hbd Industries, Inc Div Hbd/thermoid Inc |
| 5737-20-12 | 5/9 Secondary reference U.S. Government activity |
NSN 5330-01-277-8887 is a Sleeve,seal,coupler, manufactured by The Boeing Company Div Defense, classified under FSC 5330, Packing and Gasket Materials. Status: active.
NSN 5330-01-277-8887 has 2 manufacturer part numbers on file: ST7M389-20-12 (Kirkhill, Inc. Dba Ta Aerospace Co Div Kirkhill Inc, Sfs Division), ST7M389-20-12 (The Boeing Company Div Defense).
Key specifications for ST7M389-20-12: Cross-Sectional Shape Style: SPHERICAL; Cross-Sectional Length: 2.970 INCHES MINIMUM AND 3.030 INCHES MAXIMUM IN; Cross Section Inside Diameter: 2.470 INCHES MINIMUM AND 2.530 INCHES MAXIMUM IN; Specification/standard Data: 76301-ST7-389 MANUFACTURERS STANDARD. 6 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.