HT271A4-11

View detailed technical data, stock status, and sourcing information for: HT271A4-11
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-103-5732

Item Name Code

29294

Assigment Date

11/14/1980 (45 years ago)

A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.

1.140 inches minimum and 1.187 inches maximum fastener length, right-hand thread direction, flat countersunk undercut head style, 3a thread class, 0.442 inches minimum and 0.509 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: 3a
Thread Direction: right-hand
Thread Length: 0.442 inches minimum and 0.509 inches maximum
Fastener Length: 1.140 inches minimum and 1.187 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.5066 inches maximum
Head Height: 0.071 inches minimum and 0.073 inches maximum
Grip Diameter: 0.2490 inches minimum and 0.2495 inches maximum
Internal Drive Style: high-torque
End Item Identification: eagle f-15, f/a-18 hornet, harrier
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.678 inches minimum and 0.698 inches maximum
Thread Quantity Per Inch: 28
Countersink Angle: 100.0 degrees nominal
Special Features: furnished with 1 o-ring
Material: titanium alloy uns r54520 overall
Material Document And Classification: nas621 assn std single material response 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
10115016	Close Tolerance Screw
110179-4-11AS	Close Tolerance Screw
BM33024V4-11U	Close Tolerance Screw
HT271A4-11	Close Tolerance Screw
HT8137-4-11AS	Close Tolerance Screw
ST3M430V4-11AS	Close Tolerance Screw
WC8137-4-11A	Close Tolerance Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-103-5732?

The FSCG of the NSN 5305-01-103-5732 is 5305

Does the NSN 5305-01-103-5732 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5305-01-103-5732 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-103-5732 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-103-5732 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-103-5732 was assigned to the Federal Catalog?

It was assigned 45 years ago, on Fri, Nov 14, 1980