NSN 5305-01-236-5521 01-236-5521, 012365521
Product Details | EXTERNALLY RELIEVED BODY SCREW
5305-01-236-5521 An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercut for thread relief). It is No. 0 (0.060 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 10 (0.190 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.
Part Alternates: 5305-01-236-5521, 01-236-5521, 5305012365521, 012365521
Hardware and Abrasives | Screws
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 53 | 01-236-5521 | 01852 ( SCREW, EXTERNALLY RELIEVED BODY ) |
Drawings & Photos | NSN 5305-01-236-5521
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Technical Data | NSN 5305-01-236-5521
| Characteristic | Specifications |
|---|---|
| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.250 INCHES |
| THREAD QUANTITY PER INCH | 20 |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.080 INCHES NOMINAL |
| FASTENER LENGTH | 0.190 INCHES NOMINAL |
| MATERIAL | COPPER ALLOY 360 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-626D FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | TIN OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-T-10727 TYPE I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| HEAD STYLE | C49 FLAT CHAMFER |
| HEAD DIAMETER | 0.310 INCHES NOMINAL |
| HEAD HEIGHT | 0.125 INCHES NOMINAL |
| INTERNAL DRIVE STYLE | D14 SLOT |
| EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| FIRST DIAMETER FROM HEAD | 0.140 INCHES NOMINAL |
| DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.080 INCHES NOMINAL |
| MANUFACTURERS CODE | 96774 |
| DESIGN CONTROL REFERENCE | 485-1141-01 |
Restrictions/Controls & Freight Information | NSN 5305-01-236-5521
| Category | Code | Description |
|---|---|---|
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Category | Code | Description |
|---|---|---|
| No Freight Information | ||