High tensile hex bolts
- Class
- 8.8 / 10.9 / 12.9 / 14.9
- Standard
- ISO 4014, DIN 931, ASTM A325 / A490
Range 03
High Tension & Precision
Where the joint carries load. Bolts and nuts to ISO 898-1, the complete socket series, HSFG structural sets with matching nuts and DTI washers, and CNC turned components made to your drawing.
Lines
14
Sizes
M3 – M48 bolts & socket screws · nuts to M60
Applications
Structural steel · Automotive · Plant & machinery · Railways
- Property class
- Bolts 8.8, 10.9, 12.9, 14.9 · nuts class 8, 10, 12 · studs and threaded rod 8.8, 10.9, 12.9 · socket screws 12.9
- HSFG class
- Bolts 8.8S, 10.9S, 12.9S · nuts 8S, 10S, 12S
- Standards
- DIN 931 / 933 (bolts) · DIN 934 (nuts) · DIN 912 / ISO 4762 (socket cap) · DIN 913 / 914 / 915 / 916 (set screws) · ISO 4014 / 4017 · ISO 898-1 · BS 1768 · ANSI B18.2.1 / 18.2.2
- Material
- Alloy and carbon steel, heat treated
- Finish
- Dacro, Geomet, hot dip galvanised, zinc-aluminium flake, Delta-Seal, Delta-Tone, zinc-iron plating, chrome-passivated zinc, thermal & chemical blackening, electroless nickel
- Sizes
- M3 – M48 for bolts and socket screws · nuts to M60
- Typical use
- Structural steelwork, automotive, plant and machinery
Shown in black oxide — Dacro, Geomet, zinc flake and HDG to order
High tensile bolts & nuts
3 linesHigh tensile nuts
- Class
- 8 / 10 / 12 to match bolt class
- Standard
- ISO 4032, DIN 934, ASTM A194 2H
Structural stud bolts
- Type
- Full thread stud with two heavy nuts
- Standard
- ASTM A193 B7 / A194 2H
HSFG structural assemblies
4 linesHigh Strength Friction Grip sets — bolt, nut and washer supplied as a matched assembly.
HSFG bolts
- Grade
- 8.8S / 10.9S / 12.9S
- Standard
- IS 3757, BS 4395, ASTM F3125
HSFG nuts
- Grade
- Matched to bolt grade
- Standard
- IS 6623, BS 4395
HSFG washers
- Type
- Hardened flat, square taper
- Standard
- IS 6649, BS 4395
DTI washers
- Type
- Direct tension indicator
- Standard
- ASTM F959, BS 7644
Socket series
5 linesMoved here from mild steel — the socket and CSK cap screw range is a high tensile line.
Socket head cap screws
- Class
- 12.9 black or plated
- Standard
- DIN 912, ISO 4762, ANSI B18.3
Socket button head screws
- Class
- 10.9 / 12.9
- Standard
- ISO 7380, DIN 7380
Socket countersunk head cap screws
- Class
- 10.9 / 12.9
- Standard
- DIN 7991, ISO 10642
Socket set / grub screws
- Point
- Cup, cone, flat, dog point
- Standard
- DIN 913 – 916, ISO 4026 – 4029
Allen keys & spanners
- Type
- L key, ball end, T handle, spanners
- Sizes
- Metric and imperial sets
Precision & specials
2 linesPrecision turned parts
- Basis
- CNC turned to buyer drawing
- Tolerance
- As per drawing · ISO 2768
Special high tension items
- Basis
- Non-standard heads, lengths, coatings
- Standard
- ISO / DIN / ANSI / BS as required
Other ranges
Enquiries
Send us a specification
Size, grade, standard, finish and quantity is enough to start. If something is missing we will ask rather than assume.