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Technical Data

Materials & specifications

Carbon steel grades

B7, B7M, L7, L7M, B16, L43, 2H, 2HM, 4, 7, 7M

Austeniticstainless steel grades

B6, B8, B8 cl 2, B8M, B8M cl 2, B8T, B8C, 6, 8, 8A, 8M, 8MA, 8T, 8C.
& Types 304, 316, 321, 310, 410, 431

Duplex / super duplex SS grades

31803, 32760

Age hardened Stainless steels 

630,7/4PH,660 & 904L.

Exotic alloys

Inconel, Monel, Hastelloy, Titanium, Durehete, Nimonic, Ferralium, Hiduron, Nickel Ali Bronze, Phos Bronze, etc..

Dimensions used are based on

Metric coarse

Metric fine

BSW / BSF

UNC / UNF

UNS-8TPI

From M3 to M180 (1/8″ to 6″ diameter).

Fasteners will be manufactured& stocked to the dimensional standards below:

  • ASTM/BS4882 – studs
  • DIN 931 – hex bolts
  • DIN 933 – hex setscrews
  • 1960 Series – sock caps
  • DIN 912 – metric sock caps
  • DIN 975 – metric studding
  • DIN 976 – metric studbolts
  • IFI 115 – 12 point bolts
  • ANSI B18.2.1 – hex bolts
  • ANSI B18.2.2 – hex nuts
  • ANSI B16.5 – studbolts
  • ANSI B18.3 – socket screws

Hex Nuts

Material Imperial Metric
2H 1/4″ UNC – 3.1/2″ 8UN M8 – M64
2HM 3/8″ UNC – 3.1/2″ 8UN M10 – M48
G4 1/2″ UNC – 2.1/2″ 8UN M10 – M39
G7 5/16″ UNC – 3.1/2″ 8UN M8 – M52
G7M 1/2″ UNC – 2″ 8UN M12 – M33
G8 5/16″ UNC – 2″ 8UN M6 – M36
G8A 1/2″ UNC – 1.1/4″ 8UN
31803 1/2″ UNC – 1″ UNC M10 – M24
32760 1/2″ UNC – 1.1/2″ 8UN M10 – M24
8M 5/16″ UNC – 2″ 8UN M6 – M36
8T 3/8″ UNC – 1.1/8″ 8UN M12 – M20
660 5/16″ UNC – 2″ 8UN M10 – M24

All thread Studding

Material Imperial Metric
B7 1/2″ UNC – 3.1/2″ 8UN M10 – M64
L7 1/2” UNC – 3.1/2” 8UN M10 – M64
B16 1/2” UNC – 2.1/2” 8UN M12 – M33
B7M 1/2” UNC – 2” 8UN M12 – M36
B8 Class 1 1/2” UNC – 2” 8UN M12 – M30
B8 Class 2 1/2” UNC – 1.1/2” 8UN M12 – M30
B8M Class 1 1/2” UNC – 2” 8UN M12 – M30
B8M Class 2 1/2” UNC – 1.1/2” 8UN M12 – M30
660 1/2” UNC – 2” 8UN
32760 1/2” UNC – 1.1/4” 8UN

B7/L7 Hex Set Screws

Material Imperial Metric
B7/L7 3/8″ UNC X 2″ M10 X 30MM
B7/L7 1/2″ UNC X 1.1/4″ M10 X 55MM
B7/L7 1/2″ UNC X 6″ M10 X 75MM
B7/L7 5/8″ UNC X 1.1/2″ M10 X100MM
B7/L7 5/8″ UNC X 6″ M10 X 150MM
B7/L7 3/4″ UNC X 1.3/4″ M12 X 30MM
B7/L7 3/4″ UNC X 6″ M12 X 35MM
B7/L7 7/8″ UNC X 2″ M12 X 40MM
B7/L7 7/8″ UNC X 6″ M12 X 75MM
B7/L7 1″ UNC X 6″ M12 X 150MM
B7/L7 1.1/8″ 8UN X 9″ M16 X 150MM
B7/L7 1.1/4″ 8UN X 9″ M16 X 35MM
B7/L7 1.3/8″ 8UN X 12″ M20 X 150MM
B7/L7 1.1/2″ 8UN X 6″ M24 X 45MM
B7/L7 1.1/2″ 8UN X 12″ M24 X 150MM

Stud bolts Assemblies

Material Imperial Metric
B7/L7 1/2″ UNC X 2″ – 1/2″ UNC X 4″ M12 X 50MM – M12 X 100MM
B7/L7 5/8″ UNC X 3″ – 5/8″ UNC X 6″ M16 X 75MM – M16 X 150MM
B7/L7 3/4″ UNC X 3.1/2″ – 3/4″ UNC X 7″ M20 X 90MM – M20 X 150MM
B7/L7 7/8″ UNC X 4″ – 7/8″ UNC X 8″ M24 X 120MM – M24 X 150MM
B7/L7 1″ UNC X 5.1/2″ – 1″ UNC X 8″
B7/L7 1.1/8″ 8UN X 6″ – 1.1/8″ 8UN X 9″
B7/L7 1.1/4″ 8UN X 6.1/2″ – 1.1/4″ 8UN X 10″
B7/2H 1/2″ UNC X 2″ – 1/2″ UNC X 4″ M12 X 50MM – M12 X 100MM
B7/2H 5/8″ UNC X 3″ – 5/8″ UNC X 6″ M16 X 75MM – M16 X 150MM
B7/2H 3/4″ UNC X 3.1/2″ – 3/4″ UNC X 7″ M20 X 90MM – M20 X 150MM
B7/2H 7/8″ UNC X 4″ – 7/8″ UNC X 7″ M24 X 120MM – M24 X 150MM
B7/2H 1″ UNC X 5.1/2″ – 1″ UNC X 8″
B7/2H 1.1/8″ 8UN X 6″ – 1.1/8″ 8UN X 9″
B7/2H 1.1/4″ 8UN X 6″ – 1.1/4″ 8UN X 10″

B7/L7 Hex Head Bolt Blanks

Material Imperial Metric
B7/L7 1/2″ X 6″ M8 X 75MM
B7/L7 5/8″ X 4″ M10 X 100MM
B7/L7 5/8″ X 6″ M12 X 100MM
B7/L7 5/8″ X 8″ M12 X 200MM
B7/L7 3/4″ X 6″ M14 X 200MM
B7/L7 3/4″ X 9″ M16 X 150MM
B7/L7 7/8″ X 6″ M16 X 200MM
B7/L7 7/8″ X 9″ M18 X 200MM
B7/L7 1″ X 6″ M20 X 200MM
B7/L7 1″ X 8″ M24 X 100MM
B7/L7 1″ X 10″ M22 X 200MM
B7/L7 1″ X 12″ M24 X 150MM
B7/L7 1.1/8″ X 8″ M24 X 250MM
B7/L7 1.1/8″ X 10″ M27 X 150MM
B7/L7 1.1/8″ X 12″ M27 X 250MM
B7/L7 1.1/4″ X 8″ M27 X 200MM
B7/L7 1.1/4″ X 10″ M30 X 150MM
B7/L7 1.1/4″ X 12″ M30 X 200MM
B7/L7 1.3/8″ X 6″ M30 X 250MM
B7/L7 1.3/8″ X 8″ M33 X 250MM
B7/L7 1.3/8″ X 12″ M36 X 300MM
B7/L7 1.1/2″ X 8″
B7/L7 1.1/2″ X 9″
B7/L7 1.1/2″ X 16″
B7/L7 1.3/4″ X 10″
B7/L7 1.3/4″ X 12″
B7/L7 2″ X 12″

Hex Head Bolts

Material Imperial Metric
B7/L7 1/2″ UNC X 1.1/2″ – 1/2″ UNC X 3″ M12 X 35MM – M12 X 80MM
B7/L7 5/8″ UNC X 1.3/4″ – 5/8″ UNC X 4″ M16 X 40MM – M16 X 100MM
B7/L7 3/4″ UNC X 2″ – 3/4″ UNC X 5″ M20 X 50MM – M20 X 120MM
B7/L7 7/8″ UNC X 2.1/4″ – 7/8″ UNC X 5″ M24 X 55MM – M24 X 120MM
B7/L7 1″ UNC X 2.1/2″ – 1″ UNC X 5″

Socket Cap screws

Fully Threaded Imperial Metric
B7/L7 3/8″ UNC X 6″ M6 X 100MM
B7/L7 1/2″ UNC X 6″ M8 X 100MM
B7/L7 5/8″ UNC X 8″ M10 X 100MM
B7/L7 3/4″ UNC X 9″ M12 X 100MM
B7/L7 7/8″ UNC X 9″ M14 X 100MM
B7/L7 1″ UNC X 9″ M16 X 100MM
M20 X 150MM
Blanks Imperial Metric
B7/L7 3/8″ X 6″ M8 X 100MM
B7/L7 1/2″ X 6″ M10 X 150MM
B7/L7 5/8″ X 6″ M12 X 150MM
B7/L7 3/4″ X 9″ M12 X 200MM
B7/L7 7/8″ X 9″ M16 X 100MM
B7/L7 1″ X 9″ M16 X 150MM
B7/L7 1.1/8″ X 12″ M20 X 100MM
B7/L7 1.1/4″ X 12″ M20 X 150MM
B7/L7 1.1/2″ X 12″ M20 X 200MM

12 Point Bolts

Material Imperial Metric
B7/L7 5/8″ UNC X 2.3/4″
B7/L7 5/8″ UNC X 3″
B7/L7 5/8″ UNC X 4.1/2″
B7/L7 3/4″ UNC X 2.1/2″
B7/L7 3/4″ UNC X 3″
B7/L7 3/4″ UNC X 3.1/4″
B7/L7 3/4″ UNC X 3.1/2″
B7/L7 3/4″ UNC X 3.3/4″
B7/L7 3/4″ UNC X 4″
B7/L7 3/4″ UNC X 4.1/4″
B7/L7 3/4″ UNC X 4.1/2″
B7/L7 7/8″ UNC X 3.1/2″
B7/L7 1″ UNC X 2.1/2″
B7/L7 1″ UNC X 2.3/4″
B7/L7 1″ UNC X 3 ”
B7/L7 1″ UNC X 3.1/2″
B7/L7 1″ UNC X 4.1/2″
B7/L7 1.1/8″ 8UN X 2.1/2″
B7/L7 1.1/8″ 8UN X 4.1/4″
B7/L7 1.1/8″ 8UN X 4.1/2″
B7/L7 1.1/4″ 8UN X 4.1/2″
B7/L7 1.1/2″ 8UN X 4.1/4″
B7/L7 1.1/2″ 8UN X 4.3/4″
B7/L7 1.1/2″ 8UN X 5″

12 Point Bolt Blanks

Material Imperial Metric
B7/L7 1/2″ X 4″
B7/L7 5/8″ X 6″
B7/L7 3/4″ X 9″
B7/L7 7/8″ X 4″
B7/L7 1″ X 6″
B7/L7 1.1/4″ X 6″
B7/L7 1.1/2″ X 6″

Studbolts

Studbolt C/W 2 Heavy Series nuts from 1/4”/M6 dia to 4”/M100 dia

Alloy Steel Grades Stainless Steels
ASTM A193 B6 AISI 304
ASTMA193 B7 AISI 316
ASTM A193 B7M AISI 310
ASTM A193 B8 AISI 321
ASTM A193 B8M AISI 347
ASTM A193 B8T AISI410
ASTM A193 B8C Duplex 31803
ASTM A320 L7 Super Duplex 32760 SA/FG/FLT
ASTM A320 L7M Inconel 625/718
ASTM A193 B16 Hastelloy C276/C22
ASTM A320 L43 Monel 400/K500
ASTM A453 660 Nimonic 80A
Incoloy 800/800HT/825/925
Titanium 2/5
32750
31254 (254SMO)

Hexagon Nuts

Heavy and Normal Series Hexagon Nuts and Lock Nuts from ¼”/M6 dia – 4”/M100 dia

Alloy Steel Grades Stainless Steels
ASTM A193 8C AISI 304
ASTM A194 3 AISI 316
ASTM A194 2H AISI 321
ASTM A194 2HM AISI 347 
ASTM A194 4L AISI 410
ASTM A194 7L Duplex 31803
ASTM A194 7ML Super Duplex 32760 SA/FG/FLT
ASTM A194 6 Inconel 625/718,
ASTM A194 8 Hastelloy C276/C22
ASTM A194 8M Monel 400/K500
ASTM A194 8T Nimonic 80A
ASTM A453 660 Incoloy 800/800HT/825/925
Titanium 2/5
32750
31254(254SMO)

Threaded Bar

Fully threaded bar availablein alloy, stainless, non-ferrous and exotic materials from 1/4”/M6 dia – 4”/M100 dia.

Alloy Steel Grades Stainless Steels
ASTM A193 B6 AISI 304
ASTM A193 B7 AISI 316
ASTM A193 B7M AISI 310
ASTM A193 B8 AISI 321
ASTM A193 B8C AISI 347
ASTM A193 B8M AISI 410
ASTM A193 B8T Duplex 31803
ASTM A193 B16 Super Duplex 32760 SA/FG/FLT
ASTM A320 L7 Inconel 625/718
ASTM A320 L7M Hastelloy C276/C22
ASTM A320 L43 Monel 400/K500
ASTM A453 660 Nimonic 80A
Incoloy 800/800HT/825/925
Titanium 2/5
32750
31254 (254SMO)

Coating Types and Specification

  • Hot Dip Galvanization
    • Hot-dip galvanizing offers long-term protection for fasteners and other steel products.
    • Parts are evenly coated for complete coverage.
    • Expected service life can exceed 30 years.
    • Low life-cycle cost makes galvanizing an economical method of protecting steel.
    • Zinc bonds metallurgically to steel providing permanent protection.
  • Electrolytic Zinc Plated
    • Electroplated coatings of zinc with supplementary treatments on iron or steel (ISO 2081:2008)Fasteners — Electroplated coatings (ISO 4042:1999)
    • Corrosion tests in artificial atmospheres. Salt spray tests (ISO 9227:2006) Zinc, as a less precious metal, gives cathodic protection to steel; therefore small scratches in the coating do not cause immediate rusting of the steel. In modelling the corrosion durability, the coating is given a time limit it has to keep the object free of red rust. The most common model is neutral salt spray test according to standard ISO 9227:2006.
  • Cadmium Plating
    • Cadmium plating (or “cad plating”) offers a long list of technical advantages such as excellent corrosion resistance even at relatively low thickness and in salt atmospheres, softness and malleability, freedom from sticky and/or bulky corrosion products, galvanic compatibility with aluminum, freedom from stick-slip thus allowing reliable torquing of plated threads, can be dyed to many colors and clear, has good lubricity and solderability, and works well either as a final finish or as a paint base
  • PTFE/XYLAN Coating
    • Xylan is made of low friction, wear resistant composites of fluoropolymers and reinforcing binder resins. Xylan coatings can be one-, two- (primer and top-coat), and three- (primer, mid-coat, top-coat) coat conventional and reinforced (filled) coating systems. The fluoropolymers utilized in Xylan coatings consist of PTFE, PFA, and FEP.
    • It is used to protect a metal from corrosion. This can be applied on internal of tanks, vessels and outside of fabricated products too. This is being used on valves and Fasteners in wide range.
  • Electroless Nickel Plated
    • This is used to protect the metal from corrosion and mostly this is applied on Fasteners being used for petrochemical, marine and Energy sectors.