B1821BH050F138N
View detailed technical data, stock status, and sourcing information for: B1821BH050F138N
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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.
right-hand thread direction, hexagon head style, 2a thread class, 1.375 inches nominal fastener length, 1.375 inches maximum thread 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
- 1.375 inches maximum
- Fastener Length
- 1.375 inches nominal
- Head Style
- hexagon
- Head Height
- 0.302 inches minimum and 0.323 inches maximum
- Width Between Flats
- 0.736 inches minimum and 0.750 inches maximum
- End Item Identification
- multiple launch rocket system (mlrs); a4 bradley fighting vehicle; a3 bradley fighting vehicle
- Nominal Thread Diameter
- 0.500 inches
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 150000 pounds per square inch
- Hardness Rating
- 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
- Material
- steel overall
- Material Document And Classification
- sae j429 gr 8 assn std single material response overall
- Surface Treatment
- zinc and chromate overall
- Surface Treatment Document And Classification
- astm b633 ty 2 sc 3 assn std single treatment response overall
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-022-4060 | No Name Available | 02/01/1980 |
| 5305-00-285-3888 | No Name Available | 04/06/1967 |
| 5305-00-543-2264 | No Name Available | 09/21/1966 |
| 5305-00-639-0125 | No Name Available | 09/21/1966 |
| 5305-00-933-3833 | No Name Available | 12/13/1967 |
| 2520-00-934-2162 | No Name Available | 06/03/1968 |
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 |
|---|---|
| 10395952 | Hexagon Head Cap Screw |
| 5305007250154 | Hexagon Head Cap Screw |
| 5305PL1334649 | Hexagon Head Cap Screw |
| AES01F500A37AW9A91 | Hexagon Head Cap Screw |
| B1821BH050F138N | Hexagon Head Cap Screw |
| MS90727-112 | Hexagon Head Cap Screw |
| XX002-0981 | Hexagon Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-725-0154?
Does the NSN 5305-00-725-0154 have a Schedule B code assigned?
Does NSN 5305-00-725-0154 require demilitarization?
Does NSN 5305-00-725-0154 contain precious materials?
Does NSN 5305-00-725-0154 contain hazardous materials?
When the NSN 5305-00-725-0154 was assigned to the Federal Catalog?
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