The Pin,quick Release, cataloged under National Stock Number 5315-00-052-2244, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Satair A/s. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5315-00-052-2244 |
| Primary Part Number | BLS4TA31S |
| Item Name | Pin,quick Release |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Satair A/s |
| Status | ACTIVE |
| Shank Diameter | 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN |
| 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, TY2, CL2 MIL SPEC SINGLE TREATMENT RESPONSE SHANK |
| Surface Treatment Document and Classification | QQ-P-416, TY2, CL2 MIL SPEC SINGLE TREATMENT RESPONSE SPINDLE |
| Handle Length | 1.750 INCHES MINIMUM AND 1.815 INCHES MAXIMUM IN |
| Actuation Type | PUSH |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Pin Attachment Type | HOOK AND RING |
| Style Designator | T HANDLE |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE SHANK |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE OR MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE SPINDLE |
| Grip Length | 3.100 INCHES MINIMUM AND 3.120 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE SHANK |
| Surface Treatment | CADMIUM AND CHROMATE SPINDLE |
| Shear Strength | 8200 DOUBLE POUND |
| Material | STEEL COMP 4130 SHANK |
| Material | STEEL COMP 4130 SPINDLE |
| Shoulder to Head End Distance | 1.270 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 |
|---|---|
| BLS4TA31S | Satair A/s (DNK) |
| SLS4AT31 | Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok (USA) |
| MS17985-431 | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| BLS4TA31SM | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| BLS4TA31S | 5/2 Secondary reference U.S. Government activity |
| LG4ST3100 | 5/2 Secondary reference U.S. Government activity |
| BLS4TA31SM | 5/2 Secondary reference U.S. Government activity |
| LG4ST31M | 5/2 Secondary reference U.S. Government activity |
| MS17985-431 | 3/2 Design control — primary reference U.S. Government activity |
| MS17985-431 | 5/9 Secondary reference U.S. Government activity |
NSN 5315-00-052-2244 is a Pin,quick Release, manufactured by Satair A/s, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-052-2244 has 4 manufacturer part numbers on file: BLS4TA31S (Satair A/s), SLS4AT31 (Space-Lok, Inc. Dba Space-Lok Inc Div Space-Lok), MS17985-431 (Fairchild Fasteners Europe - Vsd Gmbh), BLS4TA31SM (Satair A/s).
Key specifications for BLS4TA31S: Shank Diameter: 0.247 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN; 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, TY2, CL2 MIL SPEC SINGLE TREATMENT RESPONSE SHANK. 19 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.