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NASM24693-BB23

View detailed technical data, stock status, and sourcing information for: NASM24693-BB23

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NASM24693-BB23
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-078-0248
Item Name Code
06657
Assigment Date
08/09/1967 (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, 2a thread class, right-hand thread direction, 0.066 inches minimum thread length, 0.188 inches nominal fastener 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
2a
Thread Direction
right-hand
Thread Length
0.066 inches minimum
Fastener Length
0.188 inches nominal
Head Style
flat countersunk
Head Diameter
0.238 inches minimum and 0.279 inches maximum
Internal Drive Style
cross recess type 1
Nominal Thread Diameter
0.138 inches
Thread Quantity Per Inch
32
Minimum Tensile Strength
55000 pounds per square inch
Hardness Rating
248.0 brinell standard minimum and 321.0 rockwell c maximum
Countersink Angle
99.0 degrees minimum and 101.0 degrees maximum
Screw Material
copper alloy
Screw Material Document And Classification
ams 5732 assn std 1st material response or ams 5733 assn std 2nd material response
Thread Series Designator
unc
Nondefinitive Spec/Std Data
3 type and 3c style

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-282-8510 No Name Available 10/01/1980

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
MS24693-BB23 Machine Screw
NASM24693-BB23 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-078-0248?
The FSCG of the NSN 5305-00-078-0248 is 5305
Does the NSN 5305-00-078-0248 have a Schedule B code assigned?
Yes, the Schedule B code is 7415338550
Does NSN 5305-00-078-0248 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 5305-00-078-0248 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-078-0248 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 5305-00-078-0248 was assigned to the Federal Catalog?
It was assigned 59 years ago, on Wed, Aug 9, 1967

Professional Distribution

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