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Popular Support Pages-> Wood Screws Types Threaded Insert and T-Nut Guide Wood Screw Size Chart PILOT HOLE SIZE CHART

Lag Screws

Since lags are not used with a nut and installed by turning the head of the fastener, the proper technical term would be “lag screw” ..  Read More

Lag Screws

Lag Screws

Lag screws are designed for the really big jobs – building docks, decks and wharfs. When installed properly, they have outstanding holding power and do not need to be retightened frequently, as is sometimes the case with bolted connections.

Traditional Lag Screws have a Hex Head were more of the modern Lag Screws have a either a Hex Washer Head or a large Washer Head so there is no need for a washer because it’s already built making installation easier and quicker.

Lag Screws

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  1. 1/4 x 2 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:500 SKU: 2520-LZX-PL
    $141.01
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  2. 1/4 in. x 2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0420
    $0.26
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  3. 5/16 x 2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0520
    $0.49
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  4. 3/8 in. x 2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0620
    $0.60
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  5. 3/8 in. x 2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0620
    $0.73
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  6. -5%
    1/4 x 2 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:500 SKU: 2520-LHX-PL
    was $174.80 Special Price $165.95
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  7. 1/2 in. x 2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0820
    $0.71
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  8. 1/4 in. x 2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0420
    $0.34
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  9. 1/4 x 2 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:50 SKU: 2520-LHX-CL
    $19.49
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  10. 1/4 x 2 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:50 SKU: 2520-LZX-CL
    $17.27
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  11. 5/16 x 2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0520
    $0.63
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  12. 1/4 x 3 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:500 SKU: 2530-LZX-PL
    $183.28
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  13. 1/4 x 3-1/2 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:50 SKU: 2535-LHW-CL
    $26.69
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  14. 1/4 x 3-1/2 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:500 SKU: 2535-LHW-PL
    $223.60
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  15. 1/4 x 3-1/2 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:50 SKU: 2535-LZX-CL
    $24.74
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  16. 1/4 x 3-1/2 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:500 SKU: 2535-LZX-PL
    $209.67
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  17. 5/16 x 3 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:50 SKU: 5630-LHX-CL
    $31.95
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  18. 5/16 x 3 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:250 SKU: 5630-LYW-PL
    $124.54
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  19. 1/4 x 3 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:50 SKU: 2530-LHW-CL
    $25.24
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  20. 1/4 x 3 in. SPAX Exterior Lag, Washer Head, HCR, T-Star - Qty:500 SKU: 2530-LHW-PL
    $196.28
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  21. 1/4 x 3 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:50 SKU: 2530-LHX-CL
    $21.45
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  22. 1/4 x 3 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:500 SKU: 2530-LHX-PL
    $197.85
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  23. 1/4 x 3 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:50 SKU: 2530-LYW-CL
    $21.39
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  24. 1/4 x 3 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:500 SKU: 2530-LYW-PL
    $188.74
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  25. 1/4 in. x 3 in. Hex Head Galvanized Lag, Hex SKU: GSL-0430
    $0.34
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  26. 5/16 x 3 in. Hex Head Galvanized Lag, Hex SKU: GSL-0530
    $0.66
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  27. 3/8 in. x 3 in. Hex Head Galvanized Lag, Hex SKU: GSL-0630
    $0.80
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  28. 1/2 in. x 3 in. Hex Head Galvanized Lag, Hex SKU: GSL-0830
    $1.26
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  29. 5/16 x 3 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:250 SKU: 5630-LHW-PL
    $133.72
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  30. 5/16 x 3 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:250 SKU: 5630-LZX-PL
    $128.76
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  31. 5/16 x 3 in. SPAX Washer Head Exterior Lag, HCR, Hex - Qty:250 SKU: 5630-LHX-PL
    $137.70
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  32. 5/16 x 3 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:50 SKU: 5630-LHW-CL
    $30.63
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  33. 5/16 x 3 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:50 SKU: 5630-LZX-CL
    $32.11
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  34. 5/16 x 3 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:50 SKU: 5630-LYW-CL
    $29.91
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  35. 1/2 in. x 3 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0830
    $2.05
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  36. 5/16 x 3 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0530
    $0.51
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  37. 1/4 in. x 3 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0430
    $0.53
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  38. 1/4 x 3 in. SPAX Hex Head Interior Lag, Zinc, Hex - Qty:50 SKU: 2530-LZX-CL
    $21.57
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  39. 3/8 in. x 3 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0630
    $1.19
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  40. 1/4 x 2-1/2 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:500 SKU: 2525-LHW-PL
    $177.79
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  41. 1/4 x 2-1/2 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:50 SKU: 2525-LYW-CL
    $19.42
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  42. 1/4 x 2-1/2 in. SPAX Washer Head Interior Lag, Yellow Zinc, T-Star - Qty:500 SKU: 2525-LYW-PL
    $168.85
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  43. 1/4 in. x 2-1/2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0424
    $0.26
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  44. 5/16 x 2-1/2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0524
    $0.49
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  45. 3/8 in. x 2-1/2 in. Hex Head Galvanized Lag, Hex SKU: GSL-0624
    $0.60
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  46. 1/4 in. x 2-1/2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0424
    $0.55
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  47. 3/8 in. x 2-1/2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0624
    $0.92
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  48. 5/16 x 2-1/2 in. Hex Head 18-8 SS Lag, Hex SKU: SSLN-0524
    $0.63
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  49. 1/4 x 2-1/2 in. SPAX Washer Head Exterior Lag, HCR, T-Star - Qty:50 SKU: 2525-LHW-CL
    $21.56
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  50. 5/16 x 4 in. GRK RSS Washer Head Structure, 305 SS, Star - Qty:45 with Bit SKU: 0540-SRS-C
    $61.09
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