Figure B7K
Studs and nuts are marked per
ASTM requirements
Markings
PIPING PRODUCTS
B7 STUD BOLT
PRE-PACKAGED FLANGE KITS
Features
• Material Test Reports (MTRs) in the Box
• Pre-package kits for ANSI class 150# and 300# Flanges
• Bagged & Packed in Double-Walled Strapped Cartons
• Studs:
○ Grade B7
○ Full Threaded Rod Stud Bolts
○ Chamfered Flat Faced Ends
○ Manufactured from Chromium-Molybdenum Ferritic Alloy
Steel
○ Tensile Strength: 125 KSI Min.
○ Hardness 35 HRC Max.
• Nuts:
○ Grade 2H
○ Heavy Hex
○ Single-Chamfered with Bottom Washer Face
○ Manufactured from Carbon Steel
○ Rockwell Hardness: C24 to C38
• Threads:
○
(UNC), Class 2A
○
Class 2A
• Plain Finish Coated with Light Protective Oil
• Right Hand Threads
• Heat Treated
•
Nuts
• Studs and Nuts are Heat Code Traceable*
• Stud and Nut Sets are Lot Number Traceable*
• Manufacturer Mark: HY
(hex nut marks can vary)
• Stud Grade Mark: B7
• Hex Nut Grade Mark: 2H
Standards
• Studs:
○ Material & Mechanical Properties: ASTM A193 Grade B7
○ Threads: ASME B1.1, UNC or UN8, Class 2A
• Nuts:
○ Material & Mechanical Properties: ASTM A194 Grade 2H
○ Dimensions: ASME B18.2.2
* Heat codes and lot numbers are listed on box labels. MTRs are included in each
kit.
tagged with a yellow label to indicate
that this is a complete set for one
differentiates these kits from the white
B7 stud/nuts.
www.fnw.com
Figure Number Matrix
FNW B7K 1 X
FLANGE CLASS
1 = 150#
3 = 300#
FLANGE SIZE
1/2” = D
3/4” = F
1” = G
1-1/4” = H
1-1/2” = J
2” = K
2-1/2” = L
3” = M
4” = P
5” = S
6” = U
8” = X
10” = 10
12” = 12
B7 STUD BOLT
PRE-PACKAGED FLANGE KITS
Part Numbers & Dimensions
150#
Flange
Size
Part NumberD(inch)
1/2 FNWB7K1D 1/2 - 13 2 1/2 7/8 31/64 4 1.07
3/4 FNWB7K1F 1/2 - 13 2 1/2 7/8 31/64 4 1.07
1 FNWB7K1G 1/2 - 13 2 1/2 7/8 31/64 4 1.07
1-1/4 FNWB7K1H 1/2 - 13 2 3/4 7/8 31/64 4 1.12
1-1/2 FNWB7K1J 1/2 - 13 3 7/8 31/64 4 1.16
2 FNWB7K1K 5/8 - 11 3 1/4 1-1/16 39/64 4 2.04
2-1/2 FNWB7K1L 5/8 - 11 3 1/2 1-1/16 39/64 4 2.11
3 FNWB7K1M 5/8 - 11 3 1/2 1-1/16 39/64 4 2.11
4 FNWB7K1P 5/8 - 11 3 3/4 1-1/16 39/64 8 4.37
5 FNWB7K1S 3/4 - 10 3 3/4 1-1/4 47/64 8 6.72
6 FNWB7K1U 3/4 - 10 4 1-1/4 47/64 8 6.93
8 FNWB7K1X 3/4 - 10 4 1/4 1-1/4 47/64 8 7.15
10 FNWB7K110 7/8 - 9 4 1/2 1-7/16 55/64 12 15.98
12 FNWB7K112 7/8 - 9 4 3/4 1-7/16 55/64 12 16.43
(UNC)
L
(inch)F(inch)H(inch)
Qty/
Kit
(lbs)
Figure B7K
PIPING PRODUCTS
L
Wt.
F
Notes:
1. Diameters (D) up to and including 1” are UNC, Class 2A, per ASME B1.1.
2. Diameters (D) 1-1/8” are UN8, Class 2A, per ASME B1.1.
3. Lengths (L) are effective thread lengths, excluding end points. Overall stud
bolt length will be longer.
4. Heavy hex nut dimensions are nominal per ASME B18.2.2.
D
H
300#
Flange
Size
Part NumberD(inch)
1/2 FNWB7K3D 1/2 - 13 2 1/2 7/8 31/64 4 1.07
3/4 FNWB7K3F 5/8 - 11 3 1-1/16 39/64 4 1.96
1 FNWB7K3G 5/8 - 11 3 1-1/16 39/64 4 1.96
1-1/4 FNWB7K3H 5/8 - 11 3 1/4 1-1/16 39/64 4 2.04
1-1/2 FNWB7K3J 3/4 - 10 3 1/2 1-1/4 47/64 4 3.25
2 FNWB7K3K 5/8 - 11 3 1/2 1-1/16 39/64 8 4.22
2-1/2 FNWB7K3L 3/4 - 10 4 1-1/4 47/64 8 6.93
3 FNWB7K3M 3/4 - 10 4 1/4 1-1/4 47/64 8 7.15
4 FNWB7K3P 3/4 - 10 4 1/2 1-1/4 47/64 8 7.37
5 FNWB7K3S 3/4 - 10 4 3/4 1-1/4 47/64 8 7.52
6 FNWB7K3U 3/4 - 10 4 3/4 1-1/4 47/64 12 11.28
8 FNWB7K3X 7/8 - 9 5 1/2 1-7/16 55/64 12 17.77
10 FNWB7K310 1 - 8 6 1/2 1-5/8 63/64 16 35.33
12 FNWB7K312 1-1/8 - 8 6 3/4 1-13/16 1-7/64 16 48.12
* Diameters 1-1/8” and larger are UN8
DOC: FNWB7K13 Ver. 4/2013
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The FNW logo is a trademark of Ferguson Enterprises, Inc., PL Sourcing, PO Box 2778, Newport News, VA 23609
The contents of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be construed as
warranties or guarantees, expressed or implied, regarding the products or services described herein or their use or applicability.
conditions, which are available on request. We reserve the right to modify or improve the designs or specications of our products at any time without notice. Always
verify that you have the most recent product specications or other documentation prior to the installation of these products.
(UNC)*
L
(inch)F(inch)H(inch)
Qty/
Kit
Wt.
(lbs)
All sales are governed by our terms and
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