C20645-4-7R

View detailed technical data, stock status, and sourcing information for: C20645-4-7R
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part C20645-4-7R to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-693-2864

Item Name Code

29294

Assigment Date

02/02/2021 (5 years ago)

An item designed to fit over a packing gland by mating with a surface of a second part which together will retain into a narrow groove or confined space the packing, preformed or o-ring, or an item designed to fit over a rod or shaft, to mate with a stuffing box to confine packing material. It may function as a static or dynamic seal retainer with the packing located on, around, or in the centerline direction of the rod or shaft axis. It may have holes or joints for mounting, be threaded or unthreaded. See also packing nut and packing nut, stuffing tube.

0.8405 inches nominal fastener length, right-hand thread direction, 3a thread class, 0.403 inches nominal thread length, flat countersunk 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: 0.403 inches nominal
Fastener Length: 0.8405 inches nominal
Head Style: flat countersunk
Head Diameter: 0.350 inches minimum and 0.399 inches maximum
Head Height: 0.063 inches nominal
Grip Diameter: 0.2641 inches minimum and 0.2651 inches maximum
Internal Drive Style: offset cruciform (torque set)
End Item Identification: f16
Nominal Thread Diameter: 0.250 inches
Grip Length: 0.4375 inches nominal
Thread Quantity Per Inch: 28
Minimum Tensile Strength: 3960 pounds per square inch
Hardness Rating: 46.0 rockwell c minimum and 50.0 rockwell c maximum overall
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp h11 overall
Material Document And Classification: ams6487 national std/spec single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: nas672 national std single treatment 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
93926-4-7X	Close Tolerance Screw
AIC618-4-7R	Close Tolerance Screw
C20645-4-7R	Close Tolerance Screw
GS1009-4-7R	Close Tolerance Screw
SF116-4-7R	Close Tolerance Screw
VT10021-4-7R	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-693-2864?

The FSCG of the NSN 5305-01-693-2864 is 5305

Does the NSN 5305-01-693-2864 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-693-2864 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 5305-01-693-2864 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-693-2864 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 5305-01-693-2864 was assigned to the Federal Catalog?

It was assigned 5 years ago, on Tue, Feb 2, 2021