| Item Name | Screw Close Tolerance |
| Federal Supply Group (FSG) | Hardware and Abrasives |
| Federal Supply Class (FSC) | 5305 Screws |
| National Item Identification Number (NIIN) | 01-520-3103 (015203103) |
| NCB Code | USA (01) |
| Manufacturer | Hi Shear Corporation, Lisi Aerospace Canada Corp |
| Part Number | Manufacturer | Item Name | Cage Code | RFQ |
|---|---|---|---|---|
| HT181 4 16 | hi shear corporation | screw close tolerance | 73197 | RFQ |
| HT181-4-16 | lisi aerospace canada corp | screw close tolerance | l4528 | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAUY | Point Length | 0.050 INCHES NOMINAL |
| AHYM | Nominal Thread Diameter | 0.2500 INCHES |
| AASK | Head Style | FLAT COUNTERSUNK |
| MATT | Material | STEEL OVERALL |
| SFTT | Surface Treatment | CADMIUM OVERALL |
| CSYM | Surface Finish | 32.0 MICROINCHES GRIP |
| MRC | Decoded Requirement | Clear Text Reply |
| ABQJ | Point Style | FLAT |
| AASL | Head Diameter | 0.464 INCHES MINIMUM AND 0.507 INCHES MAXIMUM |
| AASA | Thread Length | 0.469 INCHES NOMINAL |
| AASB | Fastener Length | 1.453 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| ABQZ | Internal Drive Style | HIGH-TORQUE |
| AAJF | Thread Direction | RIGHT-HAND |
| STDC | Surface Treatment Document And Classification | NAS672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| THSD | Thread Series Designator | UNJF |
| AAUR | Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| MDCL | Material Document And Classification | NAS498 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CQBC | Minimum Tensile Strength | 6400 POUNDS PER SQUARE INCH |
| ANEE | Grip Length | 0.990 INCHES MINIMUM AND 1.010 INCHES MAXIMUM |
| CMLP | Thread Quantity Per Inch | 28 |
| CSYM | Surface Finish | 32.0 MICROINCHES BEARING SURFACE OF HEAD |
| CRSQ | Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AAJD | Thread Class | 3A |
| CSYM | Surface Finish | 32.0 MICROINCHES THREADS |
| Components Related to NSN - 5305-01-520-3103, 5305015203103 | ||||
| 5305-01-222-7769 (5305012227769) | 5365-01-044-5936 (5365010445936) | 5331-01-276-7349 (5331012767349) | 5340-00-536-5281 (5340005365281) | |
| 5365-00-550-5464 (5365005505464) | 5305-01-209-8688 (5305012098688) | 5340-01-624-2067 (5340016242067) | 5340-01-214-3681 (5340012143681) | |
| 5330-01-166-9520 (5330011669520) | 5306-00-528-5534 (5306005285534) | 5307-00-307-2340 (5307003072340) | 5340-01-382-3018 (5340013823018) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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