Special Fasteners

Special fasteners manufactured to customer requirements:

Types of fasteners include:

Fastener Types

Stud bolts & nuts

hexagon bolts & cap screws




turbine bolts

12 point bolts

Socket Head Cap screws

socket set screws

U-BOLTS

Hexagon Nuts

API

Specification 20E

Products Level
Cold Forms Bolts, Screws and Nuts
BSL1
Fully Machined Bolts, Screws and Nuts
BSL1, BSL2, BSL3
Hot Formed Bolts and Screws
BSL1, BSL2, BSL3
Hot Formed Nuts
BSL1, BSL2, BSL3

API

Specification 20F

Products Level
Machined Studs
BSL2, BSL3
Machined Studs, Screws and Nuts
BSL2, BSL3
Cold Formed Bolts and Screws
BSL2, BSL3
Hot Formed Bolts and Screws
BSL2, BSL3
Roll Threaded Studs, Bolts, and Screws
BSL2, BSL3
Hot Formed Nuts
BSL2, BSL3

NORSOK M-650

D59/D59L & D60/D60L

Products
Headed Bolts by hot forming in solution annealed condition
Stud bolts, Nuts and Headed bolts by machining from solution annealed bar
Stud bolts and Headed bolts bymachining from strain hardened bar
All products are manufactured according to Norsok M-630 data sheets

Studbolts & Headed Products

ASTM Petro-Chemical grade bolting

Manufacturing size range:

Thread Forms

Special Fastener Materials

Product Type Material Grades
ALLOY AND CARBON STEEL

4140

 

1018

 

4142

 

1020

 

4330

 

1045

 

4340

 

1117

 

300M

 

1144

 

ETD150

 

12L14

 

A36

 

817M40

 

AUSTENITIC STAINLESS

302

 

316

 

303

 

316L

 

304

 

321

 

304L

 

347

 

MARTENSITIC STAINLESS

410

 

431

 

416

 

440

 

422

 

 

 

INCOLOY

800

 

825

 

800HT

 

925

 

INCONEL

600

 

725

 

625

 

X-750

 

718

 

 

 

DUPLEX / SUPER DUPLEX

2205

 

F60

 

2507

 

32760

 

F51

 

32750

 

F53

 

31803

 

F55

 

ZERON 100

 

MONEL

400

 

K500

 

HASTELLOY

B2

 

C276

 

C22

 

 

 

NITRONIC

50

 

60

 

ASTM Fastener Materials

Product Type Material Grades
BOLT GRADES
(ASTM A193 / A320)

B5

L43

B6

B8 Class 1 & 2

B7

B8M Class 1 & 2

B7M

B8T Class 1 & 2

L7

B8C

L7M

B8R

B16

B8S

NUT GRADES
(ASTM A194)

2H

8

2HM

8A

4

8M

6

8MA

7

8C

7L

8T

7M

8TA

BOLT & NUT GRADES
(ASTM A453, A286, A182, A276)

660 Class A

31803

660 Class B

32760 SA

660 Class C

32760 FG

660 Class D

32760 FLT

Plating

Heat Treatment