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    65 Products

    Low-Strength ASTM Grade A Steel Square Head Screws
    3D CAD models available

    Image of Product. Fully Threaded. Front orientation. Square Head Screws. Low-Strength ASTM Grade A Steel Square Head Screws, Fully Threaded.
    Image of Product. Partially Threaded. Front orientation. Square Head Screws. Low-Strength ASTM Grade A Steel Square Head Screws, Partially Threaded.

    Fully Threaded

    Partially

    Threaded

    About half the strength of medium-strength screws, these screws can be used for light duty fastening applications, such as securing access panels. Large flat sides make them easy to grip with a wrench and keep them from rotating in square holes. Material meets ASTM A307 specifications for quality. Length is measured from under the head.
    Head
    Nuts
    Length
    Threading
    Minimum
    Thread
    Length
    Thread
    Spacing
    Width
    Height
    Tensile
    Strength
    Specifications
    Met
    Pkg.
    Qty.
    Pack
    Pkg.
    Qty.
    Pack
    Steel
     
    1/4"-20 Threads
    1"Fully Threaded__Coarse
    3/8"11/64"60,000 psiASTM A307
    2591465A101$9.6610094855A127$10.00
    1 1/4"Partially Threaded3/4"Coarse
    3/8"11/64"60,000 psiASTM A307
    2591465A10413.4110094855A12710.00
    1 1/2"Partially Threaded3/4"Coarse
    3/8"11/64"60,000 psiASTM A307
    5091465A10723.3010094855A12710.00
    2"Partially Threaded3/4"Coarse
    3/8"11/64"60,000 psiASTM A307
    2591465A11017.0010094855A12710.00
     
    5/16"-18 Threads
    3/4"Fully Threaded__Coarse
    1/2"13/64"60,000 psiASTM A307
    2591465A11311.0710090043A03013.80
    1"Fully Threaded__Coarse
    1/2"13/64"60,000 psiASTM A307
    2591465A11612.1810090043A03013.80
    1 1/4"Fully Threaded__Coarse
    1/2"13/64"60,000 psiASTM A307
    2591465A11914.9310090043A03013.80
    1 1/2"Partially Threaded7/8"Coarse
    1/2"13/64"60,000 psiASTM A307
    1091465A12210.9310090043A03013.80
    2"Partially Threaded7/8"Coarse
    1/2"13/64"60,000 psiASTM A307
    1091465A12511.5710090043A03013.80
    3"Partially Threaded7/8"Coarse
    1/2"13/64"60,000 psiASTM A307
    1091465A12816.1110090043A03013.80
    4"Partially Threaded7/8"Coarse
    1/2"13/64"60,000 psiASTM A307
    1091465A13119.1410090043A03013.80
     
    3/8"-16 Threads
    1"Fully Threaded__Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A13410.7910090043A03113.79
    1 1/4"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A1379.3510090043A03113.79
    1 1/2"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A14013.2110090043A03113.79
    1 3/4"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A14313.6410090043A03113.79
    2"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A14613.5210090043A03113.79
    2 1/2"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A14912.2310090043A03113.79
    3"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A15216.7710090043A03113.79
    3 1/2"Partially Threaded1"Coarse
    9/16"1/4"60,000 psiASTM A307
    1091465A15522.6210090043A03113.79
     
    1/2"-13 Threads
    1"Fully Threaded__Coarse
    3/4"21/64"60,000 psiASTM A307
    1091465A15814.605090043A05515.51
    1 1/2"Fully Threaded__Coarse
    3/4"21/64"60,000 psiASTM A307
    1091465A16113.945090043A05515.51
    1 3/4"Fully Threaded__Coarse
    3/4"21/64"60,000 psiASTM A307
    1091465A16417.355090043A05515.51
    2"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    1091465A16719.555090043A05515.51
    2 1/4"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A17016.935090043A05515.51
    2 1/2"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A17312.975090043A05515.51
    3"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A17613.405090043A05515.51
    3 1/2"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A17914.975090043A05515.51
    4"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A18220.385090043A05515.51
    5"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A18520.285090043A05515.51
    6"Partially Threaded1 1/4"Coarse
    3/4"21/64"60,000 psiASTM A307
    591465A19130.455090043A05515.51
    8"Partially Threaded1 1/2"Coarse
    3/4"21/64"60,000 psiASTM A307
    191465A1945.935090043A05515.51
     
    5/8"-11 Threads
    2"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2093.002590043A06515.52
    2 1/2"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    591465A21219.122590043A06515.52
    3"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2153.682590043A06515.52
    3 1/2"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2185.142590043A06515.52
    4"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2214.552590043A06515.52
    4 1/2"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2245.652590043A06515.52
    5"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2276.172590043A06515.52
    6"Partially Threaded1 1/2"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2306.762590043A06515.52
    7"Partially Threaded1 3/4"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2337.482590043A06515.52
    11"Partially Threaded1 3/4"Coarse
    15/16"27/64"60,000 psiASTM A307
    191465A2368.892590043A06515.52
     
    3/4"-10 Threads
    2 1/2"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2424.391090043A07510.69
    3"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2454.611090043A07510.69
    3 3/4"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2484.841090043A07510.69
    4"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2516.151090043A07510.69
    4 1/2"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2546.931090043A07510.69
    5"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2577.601090043A07510.69
    5 1/2"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A26010.071090043A07510.69
    6"Partially Threaded1 3/4"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A26311.471090043A07510.69
    7"Partially Threaded2"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2669.831090043A07510.69
    8"Partially Threaded2"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A26911.201090043A07510.69
    9"Partially Threaded2"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A2729.521090043A07510.69
    10"Partially Threaded2"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A27510.201090043A07510.69
    12"Partially Threaded2"Coarse
    1 1/8"1/2"60,000 psiASTM A307
    191465A27819.611090043A07510.69
     
    1"-8 Threads
    6"Partially Threaded2 1/4"Coarse
    1 1/2"21/32"60,000 psiASTM A307
    191465A28716.90590043A09513.10
    7"Partially Threaded2 1/2"Coarse
    1 1/2"21/32"60,000 psiASTM A307
    191465A29023.01590043A09513.10
    9"Partially Threaded2 1/2"Coarse
    1 1/2"21/32"60,000 psiASTM A307
    191465A29320.93590043A09513.10
    10"Partially Threaded2 1/2"Coarse
    1 1/2"21/32"60,000 psiASTM A307
    191465A29636.88590043A09513.10
     
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