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NAS1624C6

View detailed technical data, stock status, and sourcing information for: NAS1624C6

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NAS1624C6
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-034-1388
Item Name Code
06657
Assigment Date
05/09/1967 (59 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

flat countersunk head style, 0.316 inches minimum thread length, 0.676 inches minimum and 0.706 inches maximum fastener length, 3a thread class, 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
0.316 inches minimum
Fastener Length
0.676 inches minimum and 0.706 inches maximum
Head Style
flat countersunk
Head Diameter
0.442 inches minimum and 0.510 inches maximum
Internal Drive Style
torque set
Nominal Thread Diameter
0.250 inches
Thread Quantity Per Inch
28
Minimum Tensile Strength
140000 pounds per square inch
Hardness Rating
36.0 rockwell c minimum and 40.0 rockwell c maximum
Countersink Angle
99.0 degrees minimum and 101.0 degrees maximum
Screw Material
iron alloy 660
Screw Material Document And Classification
ams 5732 assn std single material response
Screw Surface Treatment
passivate
Screw Surface Treatment Document And Classification
qq-p-35 fed spec single treatment response
Thread Series Designator
unf
Specification/Standard Data
80205-nas1624 professional/industrial association specification

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
NAS1624C6 Machine Screw
NAS1624E6 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-034-1388?
The FSCG of the NSN 5305-00-034-1388 is 5305
Does the NSN 5305-00-034-1388 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-034-1388 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 5305-00-034-1388 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-034-1388 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 5305-00-034-1388 was assigned to the Federal Catalog?
It was assigned 59 years ago, on Tue, May 9, 1967

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