Low-Head, Countersunk and Button-Head Socket Screw Finder — DIN 7984, ISO 10642 / DIN 7991, ISO 7380, DIN 6912 by Size and Length

Low-Head, Countersunk and Button-Head Socket Screw Finder

Where the full ISO 4762 head does not fit, four variants are used: DIN 7984 low-head cap screws (head height 0.7 d) for restricted spaces; DIN 6912 low-head screws with a pilot recess for key guidance; ISO 10642 / DIN 7991 countersunk socket screws (90° head) for flush surfaces; ISO 7380-1 button-head and ISO 7380-2 button-head with flange for guards, covers and panels where a rounded head is preferred. Head strength is lower than that of ISO 4762 — DIN 7984 and ISO 7380 are normally supplied in 8.8 or 10.9 rather than 12.9 — so they are not substitutes in highly loaded joints. The finder lists each standard by thread size and length with one column per material.

Countersunk screws require a 90° countersink of the correct diameter (ISO 10642 head diameter is about 2 d); an oversize countersink lets the head sit below the surface and reduces the thread engagement. Button-head screws take a smaller hexagon key than a cap screw of the same size (e.g. 4 mm for M6, 5 mm for M8) and should be tightened to the manufacturer torque for the head form, not the ISO 4762 value.

Coverage: 3,428 catalogue rows with a readable rating, of 9,674 in these categories. Each cell lists up to 2 part numbers per column; click a part number for the product page and a quotation.

DIN 7984 low-head cap screws

DIN 6912 low-head screws with pilot recess

ISO 10642 / DIN 7991 countersunk socket screws

Part numbers and designations are those of the original manufacturers and are given for identification. cBallast is an independent supplier; confirm ratings against the nameplate of the installed equipment before ordering. Table generated from the cBallast catalogue on 2026-09-29.

Compiled by cBallast for identification and cross-reference. Part numbers, designations and trademarks belong to their respective manufacturers. Confirm ratings and dimensions against the manufacturer's current documentation and the nameplate of the installed equipment before ordering or installation.