The Screw,shoulder, cataloged under National Stock Number 5305-00-165-1900, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-165-1900 |
| Primary Part Number | HT31N-6P |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Fastener Length | 0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Shoulder Length | 0.296 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Head Diameter | 0.376 INCHES MINIMUM AND 0.381 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 |
|---|---|
| HT31N-6P PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT1031-3-6P | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| HT31N-6P PRIMARY | Hi-Shear Corporation (USA) |
| 55978-3-6P PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT31N-6P | Fairchild Fasteners Europe - Vsd Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| HT1031-3-6P | 5/9 Secondary reference U.S. Government activity |
| 3M217-3-6P | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| HT1031-3-6P | C/1 Advisory reference — outside the item-of-supply concept Howmet Global Fastening Systems Inc |
NSN 5305-00-165-1900 is a Screw,shoulder, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-165-1900 has 5 manufacturer part numbers on file: HT31N-6P (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), HT1031-3-6P (Fairchild Fasteners Europe - Vsd Gmbh), HT31N-6P (Hi-Shear Corporation), 55978-3-6P (Sps Technologies, Llc Dba PB Fasteners), HT31N-6P (Fairchild Fasteners Europe - Vsd Gmbh).
Key specifications for HT31N-6P: Fastener Length: 0.765 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN; Shoulder Length: 0.296 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER IN; Thread Length: 0.380 INCHES MINIMUM AND 0.447 INCHES MAXIMUM IN; Shoulder Shape: ROUND FIRST SHOULDER. 12 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.