HT4020-5-9AY
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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. It has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. The head is designed to be driven with either a wrench or an inserted driver or both in sizes below no. 10 (0.190 in.) (5 mm) nominal diameter. No. 10 (0.190 in.) (5 mm) and larger sizes must be designed for any type of inserted driver, but may also provide for external wrenching of the head. A locking feature may be incorporated in the design of the head or threads. For items which are both shouldered and have an externally relieved body, use screw, externally relieved body. For items with a no. 10 (0.190 in.) (5 mm) or larger thread diameter without an inserted driver head, use bolt, shoulder. Excludes:bolt, internal wrenching and screw, cap, socket head.
1.078 inches minimum and 1.125 inches maximum fastener length, 0.506 inches minimum and 0.573 inches maximum thread length, 3a thread class, flat countersunk undercut head style, right-hand thread direction
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
- 0.506 inches minimum and 0.573 inches maximum
- Fastener Length
- 1.078 inches minimum and 1.125 inches maximum
- Head Style
- flat countersunk undercut
- Head Diameter
- 0.629 inches minimum and 0.634 inches maximum
- Head Height
- 0.075 inches minimum and 0.077 inches maximum
- Shoulder Diameter
- 0.3427 inches minimum and 0.3432 inches maximum first shoulder
- Shoulder Length
- 0.475 inches minimum and 0.497 inches maximum first shoulder
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.312 inches
- Thread Quantity Per Inch
- 24
- Countersink Angle
- 100.0 degrees nominal
- Shoulder Shape
- round first shoulder
- Special Features
- furnished with one rubber o ring
- Material
- steel comp xm-13 overall
- Material Document And Classification
- ams5629 assn std single material response overall
- Surface Treatment
- passivate overall
- Thread Series Designator
- unjf
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 |
|---|---|
| 11879C5-9A | Shoulder Screw |
| 3M902C5-9A | Shoulder Screw |
| HT4020-5-20Y | Shoulder Screw |
| HT4020-5-9AY | Shoulder Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-141-7195?
Does the NSN 5305-01-141-7195 have a Schedule B code assigned?
Does NSN 5305-01-141-7195 require demilitarization?
Does NSN 5305-01-141-7195 contain precious materials?
Does NSN 5305-01-141-7195 contain hazardous materials?
When the NSN 5305-01-141-7195 was assigned to the Federal Catalog?
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