418255-79
View detailed technical data, stock status, and sourcing information for: 418255-79
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An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
2a thread class, right-hand thread direction, 0.429 inches minimum and 0.500 inches maximum thread length, pan head style, 0.500 inches nominal fastener length
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.429 inches minimum and 0.500 inches maximum
- Fastener Length
- 0.500 inches nominal
- Head Style
- pan
- Head Diameter
- 0.473 inches minimum and 0.492 inches maximum
- Head Height
- 0.162 inches minimum and 0.175 inches maximum
- Internal Drive Style
- cross recess type 1
- End Item Identification
- mrap - cougar ambulance; mrap - cougar
- Nominal Thread Diameter
- 0.250 inches
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 80000 pounds per square inch
- Screw Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
- Screw Material Document And Classification
- 66 fed std all material responses
- Screw Surface Treatment
- passivate
- Screw Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response
- Thread Series Designator
- unf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-527-4107 | No Name Available | 09/24/1996 |
| 5305-00-845-4856 | No Name Available | 03/30/1967 |
Related Parts
This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:
| Part Number | Name |
|---|---|
| 112-1051-022 | Machine Screw |
| 343-0280-000 | Machine Screw |
| 401-6357200-63 | Machine Screw |
| 418255-79 | Machine Screw |
| 5305000593675 | Machine Screw |
| 7903132-14 | Machine Screw |
| MS51958-79 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-059-3675?
Does the NSN 5305-00-059-3675 have a Schedule B code assigned?
Does NSN 5305-00-059-3675 require demilitarization?
Does NSN 5305-00-059-3675 contain precious materials?
Does NSN 5305-00-059-3675 contain hazardous materials?
When the NSN 5305-00-059-3675 was assigned to the Federal Catalog?
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