LAP/STITCH SCREWS
COMPONENTS / FASTENERS / LAP/STITCH SCREWS
A lap screw, also called a stitch screw, is a self-tapping screw used to “stitch” together metal panels where they overlap, as well as to flashing, gutters and trim. Most fastener lines EMF carries offer a coordinating lap screw in either 3/4” or 7/8”.
![woodzac12x3_4splap_edited2019.jpg](https://static.wixstatic.com/media/b96b29_c43276b226f54d5098772489e52ce43e~mv2.jpg/v1/crop/x_0,y_136,w_708,h_671/fill/w_211,h_200,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/woodzac12x3_4splap_edited2019.jpg)
![woodgrip12lap_edited.jpg](https://static.wixstatic.com/media/b96b29_fce0541cf52d4a5d9dc9e5a58513dc6f~mv2.jpg/v1/crop/x_0,y_201,w_1125,h_1098/fill/w_205,h_200,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/woodgrip12lap_edited.jpg)
![12-14x34zxlwoodbinderstitch.jpg](https://static.wixstatic.com/media/b96b29_e3618244e7a04a5f8bcf55eee48ceadf~mv2.jpg/v1/crop/x_65,y_0,w_682,h_672/fill/w_205,h_200,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/12-14x34zxlwoodbinderstitch.jpg)
![zac14-78stitchsd1_edited_edited.jpg](https://static.wixstatic.com/media/b96b29_49dfd64d36404160b03887c7e66e39eb~mv2.jpg/v1/crop/x_0,y_201,w_1125,h_1098/fill/w_205,h_200,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/zac14-78stitchsd1_edited_edited.jpg)
WoodZAC™ #12 x 3/4” Lap
Head Style Size: 5/16” Hex Washer Head
Point: Sharp Point
Washer: EPDM Seal Washer
Sizes: 3/4"
Other: Metal to Wood or Metal to Metal Light Gauge
WoodGrip™ #12XG Lap
Head Style Size: 1/4” Hex Washer Head
Point: Sharp Point
Washer: Bonded Washer or EPDM Control Seal Washer
Sizes: 3/4"
Other: Metal to Wood
DirectSeal #12-14
Woodbinder Stitch
Head Style Size: 1/4” Cupped Hex Washer Head
Point: M-Bit Mini Drill Point
Washer: EPDM Seal Washer
Sizes: 3/4"
Other: Metal to Wood
ZAC™ #14 Stitch
Self Driller 1
Head Style Size: 3/8” or 5/16” Hex
Point: SD1
Washer: Thick EPDM Seal Washer
Sizes: 7/8”
Other: Metal to Metal
![impax14-78sealerlapsd1_edited.jpg](https://static.wixstatic.com/media/b96b29_af243d0831ab48f193ac67578e37a968~mv2.jpg/v1/crop/x_0,y_193,w_1125,h_1114/fill/w_205,h_203,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/impax14-78sealerlapsd1_edited.jpg)
![steelzipSCAMP14x78stitch_edited.jpg](https://static.wixstatic.com/media/b96b29_c9d05e56939f43238448bb18968dbb8b~mv2.jpg/v1/crop/x_0,y_193,w_1125,h_1114/fill/w_205,h_203,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/steelzipSCAMP14x78stitch_edited.jpg)
![bimetal12-11sd1stitch_2019.jpg](https://static.wixstatic.com/media/b96b29_e15fc665bd854373906a65e8e5a144a4~mv2.jpg/v1/crop/x_0,y_105,w_611,h_605/fill/w_205,h_203,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/bimetal12-11sd1stitch_2019.jpg)
![bimetalfreespinlap.jpg](https://static.wixstatic.com/media/b96b29_c67a986eee3d4655a2d5011532696747~mv2.jpg/v1/crop/x_172,y_0,w_678,h_668/fill/w_205,h_203,al_c,q_80,usm_0.66_1.00_0.01,enc_auto/bimetalfreespinlap.jpg)
Impax™ 1/4-14 Stitch
Self Driller 1
Head Style Size: 5/16” AF Hex
Point: SD1
Washer: Bonded Washer or Sealer Cupped
Sizes: 7/8"
Other: Up to 18ga; Metal to Metal
SteelZip 1/4-14 Stitch Self Driller 1
Head Style Size: 5/16” Hex Drive
Point: SD1
Washer: EPDM Seal Washer
Sizes: 7/8”, 1 1/8”
Other: Up to 18 ga; Metal to Metal
#12-11 Bi-Metal Stitch
Head Style Size: 5/16” Hex Washer Head
Point: SD1
Washer: 14mm Stainless Bonded Sealer Washer
Sizes: 1”
Other: Tap .031” to .060”; Available without Washer; Metal to Metal
1/4-20 Bi-Metal Lap
Head Style Size: 5/16” HWH
Point: SD2
Washer: 16mm Stainless Bonded Sealer Washer
Sizes: 1 1/8”
Other: Tap .031” to .060”; Metal to Metal