B1821BH025C175C
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An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.
1.688 inches minimum and 1.750 inches maximum fastener length, hexagon head style, 0.750 inches minimum and 0.938 inches maximum thread length, right-hand thread direction, 2a thread class
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
- 0.750 inches minimum and 0.938 inches maximum
- Fastener Length
- 1.688 inches minimum and 1.750 inches maximum
- Head Style
- hexagon
- Head Height
- 0.150 inches minimum and 0.163 inches maximum
- Width Between Flats
- 0.4280 inches minimum and 0.4375 inches maximum
- Hole Diameter
- 0.0605 inches minimum and 0.0685 inches maximum
- Locking Feature
- patch or strip threads
- Nominal Thread Diameter
- 0.250 inches
- Hole Quantity
- 1
- Hole Type
- drilled
- Features Provided
- finished head
- 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 fastener
- Hole Configuration Style
- hexagon flats
- Material
- plastic polyamide (nylon) locking feature
- Material
- steel fastener
- Material Document And Classification
- sae j429 grade 8 assn std single material response fastener
- Surface Treatment
- zinc and chromate fastener
- Surface Treatment Document And Classification
- astm b633 ty 2 sc 3 assn std single treatment response fastener
- Thread Series Designator
- unc
- Nondefinitive Spec/Std Data
- 2 type and 10p style and 8 grade
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 |
|---|---|
| AEB02C250750WA6AA1 | Machine Bolt |
| B1821BH025C175C | Machine Bolt |
| MS18154-11L | Machine Bolt |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5306-01-203-0215?
Does the NSN 5306-01-203-0215 have a Schedule B code assigned?
Does NSN 5306-01-203-0215 require demilitarization?
Does NSN 5306-01-203-0215 contain precious materials?
Does NSN 5306-01-203-0215 contain hazardous materials?
When the NSN 5306-01-203-0215 was assigned to the Federal Catalog?
Professional Distribution
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- ITAR Registered
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- HAZMAT Certified
- AS9120 Quality Standards
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