The Pin,quick Release, cataloged under National Stock Number 5315-01-188-7765, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 18 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-01-188-7765 |
| Primary Part Number | ST9M553-2AA |
| Item Name | Pin,quick Release |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN |
| Actuation Method | PUSH BUTTON |
| Detent to Tapered End Distance | 0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Detent Quantity | 2 |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE SPINDLE |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHANK |
| Handle Length | 1.800 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN |
| Actuation Type | PUSH |
| Pin Attachment Type | RING |
| Style Designator | T HANDLE |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE SHANK |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE SPINDLE |
| Grip Length | 0.219 INCHES MINIMUM AND 0.242 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE SHANK |
| Surface Treatment | CADMIUM AND CHROMATE SPINDLE |
| Material | STEEL COMP 4130 SHANK |
| Material | STEEL COMP 4130 SPINDLE |
| Shoulder to Head End Distance | 1.402 INCHES MAXIMUM 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 |
|---|---|
| ST9M553-2AA PRIMARY | The Boeing Company Div Defense (USA) |
| 35QRP2-2-A | Qrp Inc (USA) |
| Reference | Meaning |
|---|---|
| ST9M553-2AA | 5/9 Secondary reference U.S. Government activity |
| 52831-2A | 5/9 Secondary reference U.S. Government activity |
| ST9M553-2A | 5/9 Secondary reference The Boeing Company Div Defense |
| LW1697-1-200 | 5/9 Secondary reference Southco Inc. |
| LW1697-1-200 | 5/9 Secondary reference U.S. Government activity |
| 52831-2AA | 5/2 Secondary reference U.S. Government activity |
NSN 5315-01-188-7765 is a Pin,quick Release, manufactured by The Boeing Company Div Defense, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-01-188-7765 has 2 manufacturer part numbers on file: ST9M553-2AA (The Boeing Company Div Defense), 35QRP2-2-A (Qrp Inc).
Key specifications for ST9M553-2AA: Shank Diameter: 0.2470 INCHES MINIMUM AND 0.2485 INCHES MAXIMUM IN; Actuation Method: PUSH BUTTON; Detent to Tapered End Distance: 0.260 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Detent Quantity: 2. 18 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.