Pan Head Machine Screw MS51957-20B

Description:

Black oxide coating, length: 7/8", thread: 4-40, pan head machine screw, corrosion resistant steel, coarse thread

MS51957-20B Details

National Stock Number (NSN)	5305-00-822-4520
Alternate Part Number	N/A
Federal Supply Class (FSC)	5305
Unit of Measure (UOM)	100 /Ea.
Thread Class	2a
Thread Direction	Right-hand
Thread Length	Between 0.794 inches and 0.875 inches
Fastener Length	Between 0.844 inches and 0.875 inches
Head Style	Pan
Head Diameter	Between 0.205 inches and 0.219 inches
Head Height	Between 0.070 inches and 0.080 inches
Internal Drive Style	Cross recess type 1
Thread Diameter	0.112 inches
Thready Qty Per Inch (tpi)	40
Min. Tensile Strength (psi)	80000 pounds per square inch
Screw Material	Steel comp 301 or steel comp 302 or steel comp 302b or steel comp 303 or steel comp 303 plus x or steel comp 303se or steel comp 304 or steel comp 304l or steel comp 305 or steel comp 308 or steel comp 309 or steel comp 309s or steel comp 310 or steel comp 310s or steel comp 314 or steel comp 316 or steel comp 316l or steel comp 317 or steel comp 321 or steel comp 323 or steel comp 324 or steel comp 347 or steel comp 348 or steel comp 384 or steel comp 385
Thread Series Designator	Unc
Nondefinitive Specification/std Data	3 type and 9c style

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