12-point flange screws
12-point flange head screws.
Metric 12-point flange head screws to ASME B18.2.5M, M5 to M36 – property class 12.9 as standard, stainless on request. A compact head with integral flange, for high preload where space for the tool is limited.
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SPECIFICATIONASME B18.2.5M 12-point flange head screw · M12 × 1.75 × 60 mm · property class 12.9 · Plain · EN 10204 3.1ISO 898-1 – Alloy steel, quenched and tempered – the default class in ASME B18.2.5M.
01MaterialISO 898-1 – Alloy steel, quenched and tempered – the default class in ASME B18.2.5M.
02SizeM12 × 1.75 – metric 12-point flange head screw to ASME B18.2.5M (M5 to M36). Inch sizes on request.
03FinishPlain finish. No electroplating on 12.9 – because of the hydrogen-embrittlement risk we coat with zinc flake or PTFE instead.
04Certificate
05Quantity & length
60 mm length
100 pcs
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3.1 / 3.2EN 10204 certificates
Specifications
Sizes, materials and standards.
| Size | Pitch | Standard | Materials | Select |
|---|---|---|---|---|
| M5 | 0.8 mm | ASME B18.2.5M | 12.9 · stainless | |
| M6 | 1 mm | ASME B18.2.5M | 12.9 · stainless | |
| M8 | 1.25 mm | ASME B18.2.5M | 12.9 · stainless | |
| M10 | 1.5 mm | ASME B18.2.5M | 12.9 · stainless | |
| M12 | 1.75 mm | ASME B18.2.5M | 12.9 · stainless | |
| M14 | 2 mm | ASME B18.2.5M | 12.9 · stainless | |
| M16 | 2 mm | ASME B18.2.5M | 12.9 · stainless | |
| M20 | 2.5 mm | ASME B18.2.5M | 12.9 · stainless | |
| M24 | 3 mm | ASME B18.2.5M | 12.9 · stainless | |
| M30 | 3.5 mm | ASME B18.2.5M | 12.9 · stainless | |
| M36 | 4 mm | ASME B18.2.5M | 12.9 · stainless |
Which standard?
There is no DIN for the 12-point head itself.
The external 12-point flange head screw is standardised in ASME B18.2.5M. The DIN standards with “12-point” in the title cover screws with a 12-point socket – an internal drive.
01ASME B18.2.5MMetric 12-point flange head screws, M5 to M36. Property class 12.9 to ISO 898-1 as standard; corrosion-resistant versions to ISO 3506-1.
02DIN 34821 · DIN 34822 · DIN 34825Cheese head and cylindrical head screws with a 12-point socket – with or without flange. On request.
03Inch sizes12-point flange screws in inch sizes on request.
04Why a 12-point head?Twelve points spread the tool load over more flanks, so a smaller head can take a high tightening torque – useful where flanges or housings leave little room.
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Industries
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