1/4-14 x 7/8 HWH TEK Lap Screw w/ ZAC Cup Head, Seal Washer, 250 - 1/4-14 x 7/8 Inch TEK Lap Screw with 5/16 inch HWH Zinc Aluminum Cap (ZAC) cup head & Seal washer. 250/Bag. (SFS #797195 / S5031-FMF). Price/Bag. (shipping leadtime 1-3 days)
1/4-14 x 7/8 HWH TEK Lap Screw w/ ZAC Cup Head, Seal Washer, 250
$61.00 SALE $44.99
(Savings: $16.01)
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1/4-14 x 7/8 inch TEK Lap Screw with 5/16 inch HWH Zinc Aluminum Cap (ZAC) Cup Head & Seal washer. 250/Bag. (SFS 797195 / S5031-FMF). Price/Bag.

Ordering Notes:

  • Shipping leadtime: 1-3 business days.


Self-tapping 5/16 inch hex head DRILL screw for panel-to-panel side laps. Drilling capacity: .030 – .095 Some applications may require attaching light gage (24 – 26 ga) to sub-structural member. Composite thickness should not exceed .095 inch thickness. OPTIONAL PAINTED FINISH: Chromagard high-performance color-coating system based on polyurethane coating systems technology. OPTIONAL HEAD SIZE: #S5065-FM, which has 3/8 inch Hex Head.


  • Lap Seams, Metal-To-Metal, such as Metal Roofing or Siding to Metal. Drill capacity 0.030 to .095 inch
  • Metal Panel Side to Side Laps


  • Impax — Sealer — Drill Screws 1/4-14 Self Drilling Screw
  • Integral Zinc Aluminum capped 5/16 inch Hex Washer Head configuration fastener with an EPDM seal washer instead of the traditional bonded sealing washer
  • Precision cold forged assuring superior point strength and the fastest drilling time performance through high strength steel and nested purlins
  • Delivers ultimate performance in light, medium and heavy gage applications
  • Designed and engineered to have low driving and thread engagement torque and provide maximum clamp load
  • 1/4-14 x 5/16 inch Cupped Hex Washer Head: Thread Major Dia: .246 – .240, Thread Minor Dia: .192 – .185
  • Strength (lbs ult.): Tensile: 3800, Torsional: 150 in-lbs, Shear: 2850
  • Pull-out (lbs ult.): 22 ga: 379, 24 ga: 304, 26 ga: 204

More Product Information:


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similar product terms: panel screw, panel to panel screw, side lap screws, metal to metal screw, sealer screw, metal roof screw, ZAC screw, ZAC roof screw, ZAC TEK, zinc aluminum capped, zinc alloy capped, painted roof screw, drill screw, drill screw with washer, impax, impax screw

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