Mechanical
Machine building, sub-assembly, guarding and general mechanical fixing.
What this sector asks of a fastener
Mechanical assembly is the one area where the tapped hole already exists, so machine screws and set screws do the work rather than thread-forming screws. The variables that matter are drive type — because the screws are driven by powered tools, thousands of times — and property class, because the joint has been designed to a preload.
Specification points that decide the job
- Machine screws M1.4–M6 (0#–14#), 6mm–300mm
- SEM screws with the washer captive, so it cannot be left off the line
- Torx drive where cam-out would show up as a reject rate
- Classes 4.8 to 12.9 in carbon and alloy steel
Range available to this sector
Product groups this sector draws on
Machine Screws
Machine screws and set screws, M1.4–M6 (0#–14#), 6mm to 300mm, for tapped holes and nuts rather than thread forming.
Carbon Steel Machine Screws
Carbon steel machine screws in the full head and drive range, M1.4–M6, with any of the fifteen catalogue finishes.
Stainless Steel Machine Screws
Stainless steel machine screws in SUS302, 304, 305, 316, 410 and 430, for tapped assemblies that have to resist corrosion or cleaning chemicals.
Set Screws
Set screws — fully threaded, socket driven, clamping with the end rather than the head.
Bolts, Nuts & Thread Rod
Bolts, nuts and threaded rod in carbon, alloy and stainless steel. Classes 4.8 to 12.9 and A2-70 to A4-80.
Products commonly specified
13 items in these groups
Set Screws Color Zinc Plated
Set screws in a colour zinc plated finish.
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Stainless Steel SEM Screws
Stainless steel SEM screws — screw and washer pre-assembled, with the washer captive under the head so it cannot be dropped, left of
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Flat Head Half Thread Stainless Steel Screws
Flat head half thread stainless steel screws.
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Machine Screws (BF-146)
Machine screws, M1.4–M6 (0#–14#), 6mm to 300mm long, in carbon steel or stainless A2, A4 and 410, to IFI, DIN, JIS, GB or drawing.
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High Tensile Bolt & Nut Assemblies
High tensile bolt and nut assemblies, quoted as a set rather than three line items.
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Black High Tensile Bolts
High tensile bolts in a black finish, supplied with nut and washer.
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Zinc High Tensile Bolts
High tensile bolts in a zinc plated finish.
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Carriage Bolts
Carriage bolts — a domed head over a square neck that locks into the timber or the punched hole, so the bolt can be tightened from t
View specificationSpecify the fixing before you price it
Tell us the substrate, the exposure and the volume. We will come back with the head, point, thread form, material and finish that fit, and a price for them.