Alloy steel socket Head Screws

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Alloy steel socket Head Screws 

 

Fully Threaded

 

 

With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. The screws with a blue-dyed finish are easy to distinguish. Zinc-flake-coated steel screws are 20 times as corrosion resistant as zinc-plated screws and comparable to Dacromet-coated screws. Zinc-aluminum-coated steel screws are 40 times as corrosion resistant as zinc-plated screws and comparable to Magni-coated screws. They withstand 1,000 hours of salt spray per ASTM B117.

 

 

Partially Threaded

 

oarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-finethreads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.

Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.3, ASME B18.3M, ISO 21269, and ISO 4762 (formerly DIN 912) comply with specifications and testing requirements for dimensional standards.

For technical drawings and 3-D models, click on a part number.For technical drawings and 3-D models, click on a part number.

 

       
Head
           
Lg. Threading Min.
Thread Lg.
Thread
Spacing
Dia. Ht. Drive
Size
Tensile
Strength, psi
Specifications
Met
Pkg.
Qty.
  Pkg.
0-80
Black-Oxide Alloy Steel
1/16" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 50 91251A051 $13.09
3/32" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 10 91251A431 7.42
1/8" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 50 91251A052 3.29
5/32" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 10 91251A445 12.37
3/16" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 50 91251A054 3.40
1/4" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 50 91251A055 3.42
5/16" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 25 91864A002 7.66
3/8" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 25 91864A003 6.86
7/16" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 5 91251A447 8.25
1/2" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 25 91251A059 6.60
9/16" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 5 91251A449 10.31
5/8" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 5 91864A078 4.47
3/4" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 5 91864A072 4.86
7/8" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 5 91251A457 12.37
1" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 10 91251A777 8.32
1 1/8" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 1 90044A277 5.89
1 1/4" Fully Threaded __ Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 1 90044A278 7.36
1 1/2" Partially Threaded 1/2" Fine 0.096" 0.06" 0.050" 170,000 ASTM A574 1 90044A279 8.10