Part Numbering - Security Range
When building our codes, we start with the prefix which categorises each fastener:
- 82 = BFC Security Screws
- 90 = Machine Screws
- 91 = Hexagon Setscrews
- 92 = Hexagon Bolting
- 94 = Self Tapping Screws
- 97 = Pop Rivets & Nutserts
- 13 = Nuts
- 14 = Washers
- 16 = Tools & Drive Bits
This is followed by the products diameter in a 4-digit format:
- M6 = M060
- M10 = M100
- No8 AB (self-tapper) = 08AB
- 1/4BSF = 17SF
This is followed by the products length (if applicable) in a 3- or 4-digit format:
- 16mm = 016
- 120mm = 120
- 5/16” = 020
- 1/4” = 1016
Next comes a single digit for the material of the fastener:
- Mild Steel = S
- A2 Stainless Steel = 2
- High Tensile Steel (8.8) = H
- Case Hardened Steel = T
The head style, usually 1 or 2 digits, comes next (if applicable):
- Countersunk = C
- Pan = P
- Hexagon = H
- Cap Screw = A
Next is drive style, again 1 or 2 digits (if applicable):
- Pozi = P
- Hex Socket = L
- Fourtress = F
- PowerDrive = PD
The penultimate step is the finish:
- Self Colour = S
- Zinc plated = Z
- Powder Coated Finish = RALXXXX
- Hot Dip Galvanised = G
Any extra features can be represented at the end of the part number:
- Threadlock Patch = P
- Head Serrations = S
- Dog Point = DP
This system applies generally to threaded fasteners. In the case of nuts and washers where length, head style and drive style may not apply, alternative abbreviations are applied to distinguish its features e.g. HFN = Hex Full Nut, FAW = Form A Washer
Examples:
82M0800402FFS
82 = BFC Security Screw
M080 = M8 Diameter
040 = 40mm Length
2 = A2 Stainless Steel
F = Flange Head
F = Fourtress Drive
S = Self-Colour
13M060SSNZ
13 = Nuts
M060 = M6 Diameter
S = Mild Steel
SN = Shear Nut
Z = Zinc Plated