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REP Sales, Inc.
1124 S Whittle Ave
Olney, IL 62450

800-274-2003 (Phone)
800-395-FTGS (Fax)

Questions or Comments? Please email, write, or call us...

REP Sales, Inc.
1124 S Whittle Ave
Olney, IL 62450

800-274-2003 (Phone)
800-395-FTGS (Fax)

We stock only Grade B7 Studs up to 8" long; each stud is supplied with 2 Hex Head Nuts, and the studs are bare with a light coating of grease.

We can supply longer studs and Cad-Plated studs, but these are non-stock, special order items. Longer lead times and inbound freight charges may apply.

To assist you in determining which studs you need to use on a flange project, we have produced the following chart:

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
150
Number of Studs 4 4 4 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20

Stud Diameter 1/2 1/2 1/2 1/2 1/2 5/8 5/8 5/8 5/8 5/8 3/4 3/4 3/4 7/8 7/8 1 1 1-1/8 1-1/8 1-1/4

RF (1/16) FLANGE 2-1/2 2-1/2 2-3/4 2-3/4 3 3-1/4 3-1/2 3-3/4 3-3/4 3-3/4 4 4 4-1/4 4-3/4 4-3/4 5-1/4 5-1/2 6 6-1/4 7

RING JOINT FLANGE - - 3-1/4 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/4 4-1/4 4-1/2 4-1/2 4-1/2 5-1/4 5-1/4 5-3/4 6 6-1/2 6-3/4 7-1/2

Ring Size R - - 15 17 19 22 25 29 33 36 40 43 48 52 56 59 64 68 72 76

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
300
Number of Studs 4 4 4 4 4 8 8 8 8 8 8 12 12 16 16 20 20 24 24 24

Stud Diameter 1/2 5/8 5/8 5/8 3/4 5/8 3/4 3/4 3/4 3/4 3/4 3/4 7/8 1 1-1/8 1-1/8 1-1/4 1-1/4 1-1/4 1-1/2

RF (1/16) FLANGE 2-3/4 3 3-1/4 3-1/4 3-3/4 3-1/2 4 4-1/4 4-1/2 4-1/2 4-3/4 5 5-1/2 6-1/4 6-3/4 7 7-1/2 7-3/4 8-1/4 9-1/4

RING JOINT FLANGE 3-1/4 3-1/2 3-3/4 3-3/4 4-1/4 4-1/4 4-3/4 5 5-1/4 5-1/4 5-1/2 5-3/4 6-1/4 7 7-1/2 7-3/4 8-1/4 8-1/2 9 10-1/4

Ring Size R 11 13 15 18 20 23 26 31 34 37 41 45 49 53 57 61 65 69 73 77

RX - - - - 20 23 25 31 34 37 41 45 49 53 57 61 65 69 73 77

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
400
Number of Studs 4 4 4 4 4 8 8 8 8 8 8 12 12 16 16 20 20 24 24 24

Stud Diameter 1/2 5/8 5/8 5/8 3/4 5/8 3/4 3/4 7/8 7/8 7/8 7/8 1 1-1/8 1-1/4 1-1/4 1-3/8 1-3/8 1-1/2 1-3/4

RF (1/4) FLANGE 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/4 4-3/4 5 5-1/2 5-1/2 5-3/4 6 6-3/4 7-1/2 8 8-1/4 8-3/4 9 9-3/4 10-3/4

RING JOINT FLANGE 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 5 5-1/4 5-3/4 5-3/4 6 6-1/4 7 7-3/4 8-1/4 8-1/2 9 9-1/4 10 11-1/4

Ring Size R 11 13 16 18 20 23 26 31 34 37 41 45 49 53 57 61 65 69 73 77

RX - - - - 20 23 26 31 34 37 41 45 49 53 57 61 65 69 73 77

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
600
Number of Studs 4 4 4 4 4 8 8 8 8 8 8 12 12 16 20 20 20 20 24 24

Stud Diameter 1/2 5/8 5/8 5/8 3/4 5/8 3/4 3/4 7/8 7/8 1 1 1-1/8 1-1/4 1-1/4 1-3/8 1-1/2 1-5/8 1-5/8 1-7/8

RF (1/4) FLANGE 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/4 4-3/4 5 5-1/2 5-3/4 5-1/2 5-3/4 7-3/4 8-1/2 8-3/4 9-1/4 10 10-3/4 11-1/2 13

RING JOINT FLANGE 3-1/4 3-1/2 3-3/4 4 4-1/4 4-1/2 5 5-1/4 5-3/4 6 6-3/4 7 8 8-3/4 9 9-1/2 10-1/4 11 11-3/4 13-1/2

Ring Size R 11 13 16 18 20 23 26 31 34 37 41 45 49 53 57 61 65 69 73 77

RX - - - - 20 23 26 31 34 37 41 45 49 53 57 61 65 69 73 77

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
900
Number of Studs 4 4 4 4 8 8 8 - 8 8 12 12 16 20 20 20 20 20 20 20

Stud Diameter 3/4 3/4 7/8 7/8 1 7/8 1 7/8 - 1-1/8 1-1/4 1-1/8 1-3/8 1-3/8 1-3/8 1-1/2 1-5/8 1-7/8 2 2-1/2

RF (1/4) FLANGE 4-1/2 4-1/2 5 5 5-1/2 5-3/4 6-1/4 5-3/4 - 6-3/4 7-1/2 4-3/4 8-3/4 9-1/4 10 10-3/4 11-1/4 13 13-3/4 17-1/4

RING JOINT FLANGE 4-1/2 4-1/2 5 5 5-1/2 6 6-1/2 6 - 7 7-3/4 7-3/4 9 9-1/2 10-1/4 11-1/4 11-3/4 13-1/2 14-1/4 18

Ring Size R 12 14 16 18 20 24 27 31 - 37 41 45 49 53 57 62 66 70 74 78

RX - - - - 20 24 27 31 - 37 41 45 49 53 57 62 66 70 74 78

FLANGE SIZE
1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 24

CLASS
1500
Number of Studs 4 4 4 4 4 8 8 8 - 8 8 8