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Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts                            Welcome to Ningbo Beilun Milfast Metalworks Co.,Ltd - Stud Bolts,Threaded Rods,Bolts, Nuts,Washers, Metal Parts
 

Description&Size&Material

THREAD RODS&STUD BOLTS Diameter Materials HEAVY HEX NUTS Diameter Materials
ASTM A193 Grade B7/B7M 1/4"-4" B7 (4140) ASTM A194 Grade 2H/2HM 1/4"-4" C1040      C1045
ASTM A320 Grade L7/L7M 1/4"-3" B7 (4140) DIN934 H=D Grade 2H/2HM 1/4"-4"
SAE J429 Grade 2/5/8 3/16"-2' C1018 C1035 C1045 40CR4 ASTM A194 Grade7/ 7M 1/2"-2" B7 (4140)
DIN 975 Class 4.8/8.8/10.9 M6-M52 DIN934 H=D Grade 7/7M 1/2"-2" B7 (4140)
ASTM A193 Grade B16 1/4"-3" 12CrMoV      
ASTM A193 Grade B8/B8M 1/4"-3" S304/316 STRUCTURAL NUTS    
ASTM A320 Grade B8/B8M 1/4"-3" S304/316 ASTM A563 Grade A /B/ C/DH 1/4"-4" C1040    C1045
      DIN 6915 Class 10 M12-M42
STRUCTURAL BOLTS          
ASTM A325 Type 1 1/2"-1 1/2" C1045/41Cr4 FLANGE NUTS
ASTM A490 Type 1 1/2"-1 1/2" 41Cr4 42CrMo IFI 145 Grade 2/Grade 5/ Grade 8 1/4"-1 1/2" Q235/C1035/ C1045
DIN6914 Class 10.9 M12-M42 DIN 6923 Class 4/ 5/ 6/8/10 M4-M36
FLANGE BOLTS HEX NUTS
IFI 111 Grade 2/ Grade 5/Grade 8 1/4"-1 1/2" Q235/C1035/ C1045 ANSI Grade 2/Grade 5/Grade 8 1/4"-4" Q235 C1035

C1045  40CR

42CrMo

DIN6921Grade 4.8/6.8/8.8/10.9 M4-M36 DIN934 Class 4/Class 5,Class 6 M4-M100
HEX BOLTS DIN934 Class 8/Class 10,Class 12 M4-M100
ASTM A307 GradeA/GradeB 1/4"-2" C1035   C1045   41Cr4 42CrMo CASTLE NUTS
ANSI Grade 2/ Grade 5 / Grade 8 1/4"-3" ANSI B18.2.4.3M Grade 2/Grade 5 3/4"-1 1/2" C1035      C1045
DIN931 Class 8.8 /10.9/12.9 M6-M80 DIN935 Class 6/ Class 8 M20-M36
DIN933 Class 8.8 /10.9/12.9 M6-M80 FLAT WASHERS    
DIN960 Class 8.8 /10.9/12.9 M6-M80 ASTM F436 3/8"-4" C1045
DIN961 Class 8.8 /10.9/12.9 M6-M80 DIN6916 HV 10 M12-M42 C1045
      DIN125 / DIN126 M4-M100 C1018/C1045
CARRIAGE BOLTS     LOCK/SPRING WASHERS
ANSI/ ASME B18.5 (IFI C-40) 1/4"-3/4" C1035        C1045      ANSI/ASME B18.21.1 1/4"-3 1/2" 65Mn    C1070
DIN603 Class 4.8/ 6.8/8.8 M5-M20 DIN127A / DIN127B M4-M100
                   
Chemical Composition of Material
MATERIALS C% Si% Mn% B% Ti% P% S% Cr% Mo%
12CrMoV 0.08-0.15 0.17-0.37 0.40-0.70 V%(0.15-0.30) 0.030 0.030 0.30-0.60 0.25-0.35
B7 (4140) 0.38-0.42 0.15-0.35 0.65-0.95     0.025 0.025 0.80-1.10 0.15-0.25
20MnTiB 0.17-0.24 0.17-0.37 1.30-1.60 0.0005-0.0035 0.04-0.10 0.035 0.035    
41Cr4 0.37-0.45 0.17-0.37 0.50-0.80     0.030 0.030 0.80-1.10  
C1045 0.42-0.50 0.17-0.37 0.50-0.80     0.035 0.035 0.25  
C1035 0.32-0.40 0.17-0.37 0.50-0.80     0.035 0.035 0.25  
                   
Mechanical Properties
Performance Tensile Strength Yield Strength Elongation  δ   % Contraction   Ψ % HRC Tempering ( ) Quenching ()
(Stress) N/m  α b N/m   α q  
A193-B7 862 (125000 PSI)  724 (105000 PSI) 16 50 26-35 593(min) 820-880
A320-L7 862 (125000 PSI)  724 (105000 PSI) 16 50 26-35 593(min) 820-880
12.9s 1220 1080 8 44 39-44    
10.9s 1040 940 10 48 33-39    
8.8s  800 m16dm16 830 660 12 52 24-31    

 

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