Stainless Steel Fasteners

Stainless steel Fasteners are a long-lasting and cost-effective solution to secure joints that resist rust and environmental degradation.

Stirlings supplies a full range of standard Stainless steel Fasteners in Austenitic Grades 304 and 316 on an indent basis.

Please contact us regarding custom size and Grades.

Type Specification Grade Size Range
Bolt Hex Head BSW/UNC 304 ¼ x 1¼ to ⅜ x 6
  BSW/UNC 316 ¼ x 1¼ to 1 x 6
  Course metric 304 M6 x 30 to M20 x 150
  Course metric 316 M6 x 40 to M30 x 180
Setscrew Hex Head BSW/UNC 304 3/16 x ⅜ to ¾ x 4
  BSW/UNC 316 3/16 x ½ to 1 x 3½
  Course metric 304 M5 x 8 to M20 x 100
  Course metric 316 M4 x 8 to M24 x 70
Nut Hex BSW/UNC 304 ⅛ to 1
  BSW/UNC 316 3/16 to 1¾
  Course metric 304 M2 x M30
  Course metric 316 M2.5 to M48
Nut Dome / Acorn UNC 304 ¼ to ⅝
  Course metric 304 M4 to M20
  Course metric 316 M6 to M16
Nut Wing BSW/UNC 316 3/16 to 1¾
  Course metric 316 M3 to M20
Nut Nylon Inset Lock BSW/UNC 304 ¼ to 1
  BSW/UNC 316 ¼ to ¾
  Course metric 304 M3 to M20
  Course metric 316 M5 to M24
Washer Flat Imperial 304 ⅛ to 1 I.D.
  Imperial 316 ¼ to ¾
  Metric 304 M3 to M24 I.D.
  Metric 316 M6 to M48 I.D.
Washer Spring Imperial 304 3/32 to ¾ I.D.
  Imperial 316 ⅛ to 1¼ I.D.
  Metric 304 M3 to M20 I.D.
  Metric 316 M3 to M30 I.D.
Washer Internal Tooth Imperial 410 ⅛ to ⅝
  Metric 304 M3 to M16 I.D.
Washer External Tooth Metric 304 M4 to M16 I.D.
Scew Machine Phillips BSW 304 ⅛ to ¼ to 5/16 x 3
  Slotted BSW 304 ⅛ x ¼ to ½ x 4
  Phillips BSW 316 3/16 x ⅜ to ⅝ x 2½
  Slotted BSW 316 3/16 x ¼ to ⅜ x 3
  Phillips Metric 304 M2 x 5 to M6 x 10
  Slotted Metric 304 M3 x 5 to M12 x 60
  Slotted Metric 316 M2 x 5 to M10 x 50
Cap Screw Socket head BSW/UNC 304 ¼ x ⅜ to ⅜ x 3
  BSW/UNC 316 ¼ x ¼ to ½ x 1
  Course metric 304 M5 x 12 to M5 x 40
  Course metric 316 M2 x 4 to M20 x 100
Screw Grub UNC 304 ¼ x ¼ to ½ x ¾
  UNC 316 ¼ x ¼ to ½ x 1
  Course metric 304 M3 x 3 to M12 x 40
  Course metric 316 M4 x 6 to M12 x 30
Screw Self-Tapping Pozi/Phillips/Slotted 304 4G x ¼ to 14G x 2
  Phillips/Slotted 316 4G x ⅜ to 14G x 2

 

Type Specification Grade Size Range
Screw Coach Hex head Course metric 316 M6 x 30 to M12 x 120
Allthread BSW/UNC 304 3/16 to 1
  Course Metric 304 M5 to M24
  BSW/UNC 316 3/16 x 1½
  Course Metric 316 M3 x 30
Split Pins Imperial 304 3/32 x ⅜ to ¼ x 3
  Metric 304 M1 x 10 to M10 x 100
U-Bolts Imperial 304/316 Made to order
  Metric 304/316 Made to order
Single Ended Studs BSW/UNC 304/316 Made to order
  Course Metric 304/316 Made to order
Double Ended Studs BSW/UNC 304/316 Made to order
  Course metric 304/316 Made to order
Butt Hinge Imperial 304 2 to 4 long
  Metric 304 50 to 100 long
Piano Hinge Metric 304 30 x 1800 x 0.8
Chain Metric 316 3.5 x 11 to 14 x 36mm

 

Imp. Dia BSW Threads per Inch BSF
(in)   UNC UNF  
⅛ 40 40    
5/32 32 32    
3/16 24 24 32 32
¼ 20 20 28 26
5/16 18 18 24 22
⅜ 16 16 24 20
7/16 14 14 20 18
½ 12 13 20 16
⅝ 11 11 18 14
¾ 10 10 16 12
⅞ 9 9 14 11
1 8 8 12 10
1⅛ 7 7 12 9
1¼ 7 7 12 9
1½ 6 6 12 8

 

Metric Dia. Pitch
(mm) ISO STD. Fine STD.
3 0.50 0.50
4 0.70 0.75
5 0.80 0.80
6 1.00 1.00
8 1.25 1.00
10 1.50 1.00
12 1.75 1.50
16 2.00 1.50
20 2.50 1.50
22 2.50 1.50
24 3.00 2.00
30 3.50 2.00
36 4.00 3.00