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WIHA insulated hacksaw frame for electrical work. The frame is 280 mm long and takes 150 mm blades.
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HSS, cobalt or SDS: the right drill bit for steel, stainless and concrete
Which drill bit for mild steel, stainless, brick and concrete: HSS DIN 338, cobalt, SDS Plus and SDS Max, with speeds, sizes and what 10/100/160 means.
Socket cap, countersunk, button or grub: choosing Allen screws
The four hex socket (Allen) screw heads, what each is for, the hex key size for every metric size, and when 12.9 black beats A2 stainless.
DIN 933 or DIN 931? Full thread vs half thread hex bolts
DIN 933 is threaded to the head, DIN 931 keeps a plain shank. Which one carries shear, which one suits tapped holes, how to pick the length and grade.
Stainless, zinc-plated or galvanised: fasteners for outdoor and coastal sites
Choosing fasteners that will not rust: zinc-plated indoors, hot-dip galvanised outdoors, stainless A2 and A4 by the sea, and the mistakes that cause early corrosion.
Inch or metric? Reading bolt sizes like 1/2" x 1-1/2" and M12 x 40
How to read and order inch and metric bolts: diameter first, then length, UNC, UNF and BSW threads, and why an M12 nut will not fit a 1/2 inch bolt.
Fixing steel to concrete: wedge, sleeve or chemical anchor?
Which anchor holds steel on concrete: wedge anchors, sleeve (rawl) bolts or chemical anchors, with sizes, installation steps and when to use each.
Bolt grades 4.8, 8.8, 10.9 and 12.9 explained: what HT means
What the numbers on a bolt head mean, when an 8.8 HT bolt is enough and when to use 10.9, which nut to pair with each grade, and DIN 931 versus DIN 933.
Galaxy Fasteners & Supplies Ltd
#26 Dar Es Salaam Road, Industrial AreaOpposite the Telkom ShopNairobi, Kenya- Mon – Fri
- 08:00 – 16:30
- Saturday
- 08:00 – 13:00
- Sunday
- Closed