Home / Bolts and Machine Screws - Metric / M3 HoloKrome Socket Head Countersunk Screws in Black Oxide High Tensile Steel Class 12.9

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M3 HoloKrome Socket Head Countersunk Screws in Black Oxide High Tensile Steel Class 12.9

Holo-Krome branded socket countersunk screws (or flat head screws), in alloy steel with a strength grade of 12.9, and a black oxide finish. Manufactured in the USA, Holo-Krome are high quality screws, similar to Unbrako, with precision 3A threads for greater clamping force. Conforming to ISO 10642/DIN 7991, these require a hex socket/allen key to fit. The countersunk head is used in conjunction with a countersunk hole or countersunk washer.

HoloKrome Socket Head Countersunk Screws in BO-12.9 image

technical drawing of HoloKrome Socket Head Countersunk Screws

Technical Summary

nominal diameter

dk min.

minimum head diameter

5.54

drive size

2.0

t min.

minimum recess depth

1.1

k max.

maximum head height

1.86

Standard

ISO 10642 (DIN 7991)

all dimensions in millimetres (mm)

				HoloKrome Socket Head Countersunk Screws Standard
				HoloKrome Technical Handbook

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Description	Sale Qtys	Qty	Price	Breakdown	Despatch Estimate
M3 x 6mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9 WF63471			£0.00
M3 x 8mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9 WF63472			£0.00
M3 x 10mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9 WF63473			£0.00
M3 x 12mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9 WF63474			£0.00

M3 x 6mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9
WF63471

M3 x 8mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9
WF63472

M3 x 10mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9
WF63473

M3 x 12mm HoloKrome Socket Countersunk (Allen) Screw in Black Oxide Steel 12.9
WF63474

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