The Screw,lag, cataloged under National Stock Number 5305-00-177-5505, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Services Administration Federal Supply Service. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-177-5505 |
| Primary Part Number | FF-B-561 TY1ST1GRB |
| Item Name | Screw,lag |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | General Services Administration Federal Supply Service |
| Status | CANCELLED |
| Head Style | HEXAGON |
| Nonmachine Thread Style | GIMLET POINT (TYPE A, AB OR BA) |
| Hardness Rating | 60.0 ROCKWELL B MINIMUM OVERALL |
| Shoulder Length | 0.125 INCHES MINIMUM FIRST SHOULDER IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Width Between Flats | 0.484 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 55000 POUNDS PER SQUARE INCH LBS |
| Surface Treatment | ZINC OVERALL |
| Head Height | 0.195 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Shoulder Diameter | 0.298 INCHES MINIMUM AND 0.324 INCHES MAXIMUM FIRST SHOULDER IN |
| Surface Treatment Document and Classification | ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Material | STEEL OVERALL |
| Nonmachine Nominal Thread Diameter | 0.312 INCHES IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FF-B-561 TY1ST1GRB | General Services Administration Federal Supply Service (USA) |
| 1062 | Bolt Depot, Inc. (USA) |
| ANSI B18.2.1 | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| MS16992-525 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| ASME B18.2.1 | The American Society of Mechanical Engineers (USA) |
| FF-B-561 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
NSN 5305-00-177-5505 is a Screw,lag, manufactured by General Services Administration Federal Supply Service, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-177-5505 has 6 cross-referenced part numbers: FF-B-561 TY1ST1GRB (General Services Administration Federal Supply Service), 1062 (Bolt Depot, Inc.), ANSI B18.2.1 (American National Standards Institute Incorporated Dba American National Standards Institute), MS16992-525 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), ASME B18.2.1 (The American Society of Mechanical Engineers) and 1 more.
There are 12 known substitutes for 5305-00-177-5505: 5305-00-145-1064, 5305-00-177-5542, 5305-00-177-5578 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for FF-B-561 TY1ST1GRB: Head Style: HEXAGON; Nonmachine Thread Style: GIMLET POINT (TYPE A, AB OR BA); Hardness Rating: 60.0 ROCKWELL B MINIMUM OVERALL; Shoulder Length: 0.125 INCHES MINIMUM FIRST SHOULDER IN. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-177-5505 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.