The Screw,shoulder, cataloged under National Stock Number 5305-01-121-0356, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 10 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-121-0356 |
| Primary Part Number | GS5511C3-828 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Fastener Length | 1.078 INCHES MINIMUM AND 1.108 INCHES MAXIMUM IN |
| Shoulder Length | 0.715 INCHES MINIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Diameter | 0.193 INCHES MINIMUM AND 0.195 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 0.293 INCHES MINIMUM AND 0.353 INCHES MAXIMUM IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Hardness Rating | 33.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AISI ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Internal Drive Style | SLOT |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4037 OR STEEL COMP 8740 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.266 INCHES MINIMUM AND 0.286 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 |
|---|---|
| GS5511C3-828 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| GS551C3-828 | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| GS5511C3-828 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| B1990-10 | 5/9 Secondary reference Bfgoodrich Co the Aerospace Div Engineered Polymer Products |
| BM19042-3-828 | C/1 Advisory reference — outside the item-of-supply concept Huck International, Inc |
| GS5511C3-828 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| AIC551C-3-828 | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| GS5511C3-828 | 5/9 Secondary reference Aero Mechanical Fastening Systems Inc |
| GS551C3-828 | 5/9 Secondary reference Abounding Security Inc Div of Maa Corp |
| GS551C3-828 | 5/9 Secondary reference Aero Mechanical Fastening Systems Inc |
| GS551C3-828 | 5/9 Secondary reference Bfgoodrich Co the Aerospace Div Engineered Polymer Products |
| BM19042-3-828 | 5/9 Secondary reference U.S. Government activity |
| GS551C3-828 | 7/2 Vendor item drawing reference Northrop Grumman Systems Corporation |
NSN 5305-01-121-0356 is a Screw,shoulder, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-121-0356 has 3 manufacturer part numbers on file: GS5511C3-828 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), GS551C3-828 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), GS5511C3-828 (Northrop Grumman Systems Corporation).
Key specifications for GS5511C3-828: Fastener Length: 1.078 INCHES MINIMUM AND 1.108 INCHES MAXIMUM IN; Shoulder Length: 0.715 INCHES MINIMUM FIRST SHOULDER IN; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Diameter: 0.193 INCHES MINIMUM AND 0.195 INCHES MAXIMUM FIRST SHOULDER IN. 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.