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Modifer Truss Head Self Drilling Screws

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Company: HAIYAN YAOZHIBAO IMPORT&EXPORT CO.,LTD
Keywords: Screws / Self drilling Screws / Modifer Truss
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Product Details

Description

A steel fastener with an extra wide head,twinfast thread and self drilling point.The head is an integrally formed round washer with a low rounded top that is approximately 75% the diameter of the washer.

Applications/Advantages

Common usage is to attach wire or metal lathe to metal sutds of a thickness between 12 - 20 guage.The head design offers low clearance and an extra large bearing surface.The recommended drive speed for installation is 2500 rpm.

Material

AISI 1022 or equivalent steel

HEAT TREATMENT

Screws shall be quenched in liquid and then tempered by reheating to 650 °F minimum.

SURFACE Hardness

Rockwell C 50 – 56

CASE DEPTH

#4 thru #6 diameter:0.002-0.007

#8 thru #12 diameter:0.004-0.009

1/4” diameter:0.005-0.011

CORE HARDNESS(after tempering)

Rockwell C 32 – 40