B70304

View detailed technical data, stock status, and sourcing information for: B70304

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B70304
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-076-0213
Item Name Code
16282
Assigment Date
03/09/1972 (54 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

right-hand thread direction, 3a thread class, 0.547 inches minimum and 0.641 inches maximum thread length, 0.609 inches minimum and 0.641 inches maximum fastener length, flat chamfer 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
0.547 inches minimum and 0.641 inches maximum
Fastener Length
0.609 inches minimum and 0.641 inches maximum
Head Style
flat chamfer
Head Diameter
0.303 inches minimum and 0.312 inches maximum
Head Height
0.185 inches minimum and 0.190 inches maximum
Internal Drive Style
hexagon
Nominal Thread Diameter
0.190 inches
Width Across Flats
0.156 inches minimum and 0.159 inches maximum
Thread Quantity Per Inch
32
Minimum Tensile Strength
80000 pounds per square inch
Hardness Rating
80.0 rockwell b minimum overall
Minimum Yield Strength
30000 pounds per square inch
Material
steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316 overall
Material Document And Classification
66 fed std all material responses overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
qq-p-35 fed spec single treatment response overall
Thread Series Designator
unf
Specification/Standard Data
80205-nas1351 professional/industrial association standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-014-8460 No Name Available 08/08/1969

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
B70304 Socket Head Cap Screw
VA-97-0190-006 Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-076-0213?
The FSCG of the NSN 5305-00-076-0213 is 5305
Does the NSN 5305-00-076-0213 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-076-0213 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 5305-00-076-0213 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-076-0213 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 5305-00-076-0213 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Thu, Mar 9, 1972

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