4-00277-087
View detailed technical data, stock status, and sourcing information for: 4-00277-087
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An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is not designed to be held or driven with an inserted drivers. A locking feature may be incorporated in the design of the head or threads. For items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. For items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. Excludes:thumbscrew.
3a thread class, 1.734 inches minimum and 1.781 inches maximum fastener length, 1.000 inches minimum thread length, right-hand thread direction, flat chamfer head style
Product Characteristics
Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.
- Thread Class
- 3a
- Thread Direction
- right-hand
- Thread Length
- 1.000 inches minimum
- Fastener Length
- 1.734 inches minimum and 1.781 inches maximum
- Head Style
- flat chamfer
- Head Diameter
- 0.365 inches minimum and 0.375 inches maximum
- Head Height
- 0.244 inches minimum and 0.250 inches maximum
- Locking Feature
- pellet threads
- Internal Drive Style
- hexagon
- Nominal Thread Diameter
- 0.250 inches
- Width Across Flats
- 0.188 inches minimum and 0.190 inches maximum
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 80000 pounds per square inch
- Hardness Rating
- 80.0 rockwell b minimum overall
- Minimum Yield Strength
- 30000 pounds per square inch
- Material
- plastic polyamide (nylon) locking feature
- Material
- steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp 384 or steel comp xm-7 fastener
- Material Document And Classification
- astm a493 assn std all material responses fastener
- Surface Treatment
- passivate fastener
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response fastener
- Thread Series Designator
- unc
- Specification/Standard Data
- 80205-nas1352 professional/industrial association standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-789-5312 | No Name Available | 01/11/1971 |
| 5305-01-080-9178 | No Name Available | 03/01/1995 |
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 |
|---|---|
| 12208-4 | Socket Head Cap Screw |
| 4-00277-087 | Socket Head Cap Screw |
| NAS1352C4LN28 | Socket Head Cap Screw |
| NK60CR420-28E | Socket Head Cap Screw |
| TN1352C4LN28 | Socket Head Cap Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-177-5321?
Does the NSN 5305-00-177-5321 have a Schedule B code assigned?
Does NSN 5305-00-177-5321 require demilitarization?
Does NSN 5305-00-177-5321 contain precious materials?
Does NSN 5305-00-177-5321 contain hazardous materials?
When the NSN 5305-00-177-5321 was assigned to the Federal Catalog?
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