The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-638-1649, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Airco Cryogenics Div of Airco Inc. Government technical data includes 23 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-638-1649 |
| Primary Part Number | 2053255 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Airco Cryogenics Div of Airco Inc |
| Status | CANCELLED |
| Material Document and Classification | ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL COMP 303 OR STEEL COMP 303SE OVERALL |
| Second Diameter From Head | 0.109 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Hole Quantity | 1 |
| Head Style | KNURLED NO. 1 |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.594 INCHES NOMINAL IN |
| Fastener Length | 0.938 INCHES NOMINAL IN |
| First Diameter From Head | 0.164 INCHES NOMINAL IN |
| Head Diameter | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Hole Type | DRILLED |
| Hole Diameter | 0.063 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Hole Configuration Style | ROUND |
| Head Height | 0.250 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.040 INCHES NOMINAL IN |
| Thread Length | 0.344 INCHES MINIMUM IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 2053255 | Airco Cryogenics Div of Airco Inc (USA) |
| 2053255 | Navcom Defense Electronics, Inc. (USA) |
| A2053255 | L3harris Technologies, Inc. (USA) |
| 648697-000 | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
| 648697 | Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA) |
| 2053255 | L3harris Technologies, Inc. (USA) |
| 8060000496 | Navcom Defense Electronics, Inc. (USA) |
NSN 5305-00-638-1649 is a Screw,externally Relieved Body, manufactured by Airco Cryogenics Div of Airco Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-638-1649 has 7 cross-referenced part numbers: 2053255 (Airco Cryogenics Div of Airco Inc), 2053255 (Navcom Defense Electronics, Inc.), A2053255 (L3harris Technologies, Inc.), 648697-000 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc), 648697 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc) and 2 more.
There are 2 known substitutes for 5305-00-638-1649: 5330-00-842-8275, 2990-01-671-3865. Verify interchangeability with system specifications before substitution.
Key specifications for 2053255: Material Document and Classification: ASTM A582 ASSN STD ALL MATERIAL RESPONSES OVERALL; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL COMP 303 OR STEEL COMP 303SE OVERALL; Special Features: 45.0 DEGREE TO POINT AT THREAD END OF SCREW. 24 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-638-1649 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.