Product Categories

High Tensile Stainless Steel Bolts

[39]

Stainless Steel Shackle

[43]

Contact Now

Jiaxing City Qunbang Hardware Co., Ltd

Visit Website

City:jiaxing

Province/State:zhejiang

Country/Region:china

Contact Person:MrLance

View Contact Details

Contact Now

China HDG Treatment Hot Forging Socket Head Cap Screw Cylindrical wholesale

HDG Treatment Hot Forging Socket Head Cap Screw Cylindrical

Ask Latest Price

Video Channel

Brand Name :QBH

Model Number :ANSI 1/4” to 2"

Certification :ISO9001

Place of Origin :CHINA

MOQ :900kg

Price :Negotiation

Payment Terms :L/C, T/T,OA

Supply Ability :500TON/MONTH

Delivery Time :30days

Packaging Details :25kg Carton+900kg/Pallet or 5KG/CTN

Material :Carbon steel

Size :1/4 to 2inch

Surface treatment :Plain,Zinc,Black,H.D.G

Grade :2/5/8

Process :Cold Forging,Hot Forging

Sample :Free Sample

Packaging :25kg Carton+900kg/Pallet

Length :within 300mm

Contact Now

Add to Cart

View Product Description

ASME B 18.3 Hexagon Socket Head Cap Screws Cylindrical Socket Head Cap Screw UNC UNF Gr2 5 8 Black YZP Used In Machine

Specification

Alloy Steel Socket Head Screws

With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. Zinc-aluminum-coated steel screws are 40 times as corrosion resistant as zinc-plated screws and comparable to Magni-coated screws. They withstand 1,000 hours of salt spray per ASTM B117.

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.

Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality. Screws that meet ASME B18.3, ASME B18.3M, ISO 21269, and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.

Size

d	Screw Diameter
PP	UNC
	UNF
	UNEF
d_s	max=nominal size
d_s	min
d_k	max
d_k	min
k	max
k	min
s	Nominal Size
t	min
b	min

0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190	0.250	0.3125	0.375	0.4375	0.500	0.625	0.750
-	64.0	56.0	48.0	40.0	40.0	32.0	32.0	24.0	20.0	18.0	16.0	14.0	13.0	11.0	10.0
80.0	72.0	64.0	56.0	48.0	44.0	40.0	36.0	32.0	28.0	24.0	24.0	20.0	20.0	18.0	16.0
-	-	-	-	-	-	-	-	-	32.0	32.0	32.0	28.0	28.0	24.0	20.0
0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190	0.250	0.3125	0.375	0.4375	0.500	0.625	0.750
0.0568	0.0695	0.0822	0.0949	0.1075	0.1202	0.1329	0.1585	0.1840	0.2435	0.3053	0.3678	0.4294	0.4919	0.6163	0.7406
0.096	0.118	0.140	0.161	0.183	0.205	0.226	0.270	0.312	0.375	0.469	0.562	0.656	0.750	0.938	1.125
0.091	0.112	0.134	0.154	0.176	0.198	0.218	0.262	0.303	0.365	0.457	0.550	0.642	0.735	0.921	1.107
0.060	0.073	0.086	0.099	0.112	0.125	0.138	0.164	0.190	0.250	0.312	0.375	0.438	0.500	0.625	0.750
0.057	0.070	0.083	0.095	0.108	0.121	0.134	0.159	0.185	0.244	0.306	0.368	0.430	0.492	0.616	0.740
0.050	0.062	0.078	0.078	0.094	0.094	0.109	0.141	0.156	0.188	0.250	0.312	0.375	0.375	0.500	0.625
0.025	0.031	0.038	0.044	0.051	0.057	0.064	0.077	0.090	0.120	0.151	0.182	0.213	0.245	0.307	0.370
0.50	0.62	0.62	0.62	0.75	0.75	0.75	0.88	0.88	1.00	1.12	1.25	1.38	1.50	1.75	2.00

Size

d	Screw Diameter
PP	UNC
	UNF
	UNEF
d_s	max=nominal size
d_s	min
d_k	max
d_k	min
k	max
k	min
s	Nominal Size
t	min
b	min

0.875	1.000	1.125	1.250	1.375	1.500	1.750	2.000	2.250	2.500	2.750	3.000	3.250	3.500	3.750	4.000
9.0	8.0	7.0	7.0	6.0	6.0	5.0	4.5	4.5	4.0	4.0	4.0	4.0	4.0	4.0	4.0
14.0	12.0	12.0	12.0	12.0	12.0	-	-	-	-	-	-	-	-	-	-
20.0	20.0	18.0	18.0	18.0	18.0	-	-	-	-	-	-	-	-	-	-
0.875	1.000	1.125	1.250	1.375	1.500	1.750	2.000	2.250	2.500	2.750	3.000	3.250	3.500	3.750	4.000
0.8647	0.9886	1.1086	1.2336	1.3568	1.4818	1.7295	1.9780	2.2280	2.4762	2.7262	2.9762	3.2262	3.4762	3.7262	3.9762
1.312	1.500	1.688	1.875	2.062	2.250	2.625	3.000	3.375	3.750	4.125	4.500	4.875	5.250	5.625	6.000
1.293	1.479	1.665	1.852	2.038	2.224	2.597	2.970	3.344	3.717	4.090	4.464	4.837	5.211	5.584	5.958
0.875	1.000	1.125	1.250	1.375	1.500	1.750	2.000	2.250	2.500	2.750	3.000	3.250	3.500	3.750	4.000
0.864	0.988	1.111	1.236	1.360	1.485	1.734	1.983	2.232	2.481	2.730	2.979	3.228	3.478	3.727	3.976
0.750	0.750	0.875	0.875	1.000	1.000	1.250	1.500	1.750	1.750	2.000	2.250	2.250	2.750	2.750	3.000
0.432	0.495	0.557	0.620	0.682	0.745	0.870	0.995	1.120	1.245	1.370	1.495	1.620	1.745	1.870	1.995
2.25	2.50	2.81	3.12	3.44	3.75	4.38	5.00	5.62	6.25	6.88	7.50	8.12	8.75	9.38	10.00

Mechanical property :SAEJ429

Process flow

Cold forging

Annealing treatment(if need) ➨ wiredrawing ➨ clod forging ➨ thread rolling ➨make heat treatment(if need) ➨ Finish ➨ Packing

Hot forging

Cutting material ➨ hot forging ➨ turning ➨ shrink diameter(half thread) ➨thread rolling ➨ make heat treatment(if need) ➨ Finish ➨ Packing

Product Grade

Grade2 Grade5 Grade8

Materials and Chemical compstition

1008

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Al
0.06	0.06	0.33	0.013	0.003	0.01	0	0.01	0.028

1035

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.34	0.13	0.73	0.012	0.002	0.02	0.01	0.02

10B21

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	B
0.2	0.04	0.81	0.017	0.007	0.017	0.0021

1045

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.45	0.23	0.58	0.014	0.006	0.057	0.008	0.016

40CR

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu
0.4	0.21	0.54	0.015	0.008	0.95	0.02	0.02

35CRMO

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Mo
0.35	0.22	0.59	0.01	0.003	0.93	0.01	0.01	0.21

42CRMO

CHEMICAL COMPOSI %
C	Si	Mn	P	S	Cr	Ni	Cu	Mo
0.42	0.27	0.92	0.013	0.004	1.01	0.03	0.04	0.2

Finish

PLAIN ZP YZP BLACK HDG DACROMET GEOMET CHROME NICKEL AND SO ON

PACKING

QBH BULK

20-25KG/CTN,36CTNS/PALLET

20-30KG/BAGS,36BAGS/PALLET

ONE TON/BOXES

50KG/ IRON DRUM,12 IRON DRUMS/PALLET

QBH SMALL PACKING

Packing in small boxes according to customer’s requirements

Packing in plastic bag according to customer’s requirements

QBH PALLET TYPE

SOLID WOOD FUMIGATION PALLET

EURO Pallet

THREE SPLINT PALLET

WOODEN BOX

The advantages of QBH

QBH brand sales to the main quality assurance.
Years of export trade management, excellent service, word-of-mouth guarantee.
By working with TUV,escort for quality.
Customization of non-standard parts can be made according to customer's requirements and drawings.
For quality customers,we can provide a certain credit period.

Product application

QBH Hex Socket head cap screws are commonly used in machine assembly for removable panels and parts. They have a round cap with a hex head and are tightened with a socket wrench drive. Longer caps are easier to see when fastened, while button and flat head caps are less likely to snag clothing or linkages. Cap screws with a black oxide or armor coat finish resist corrosion.

Product Tags: