Audited Supplier
Size 3/8*1 UNC
Grade 8 (SAE J429)
Cr40Mo Steel Quenched & Tempered
Mechanican properties (sample tested)
Proof strength: 132 kpsi
Tensile strength 155 kpsi
Yield strength 142 kpsi
Core Hardness 38 Hrc
SAE J429 Grade 8 Flanged Bolts
| Size | 3/8*1 UNC (we also can customize the special size) |
| Grade | SAE J429 Grade 8 |
| Material | Cr40Mo Steel Quenched & Tempered |
| Core Hardness | 38 Hrc |
| Head | Hexagon according to ANSI B18.2.1 |
Hex flange bolt is a one-piece forged bolt with a hex washer head. The washer head always in 2 types, serrated flange and smooth flange, the so called flat bearing surface. Hex flange bolts always made by medium carbon steel, alloy steel and stainless steel.
Inch: ANSI/ASME B18.2.1 :
Packing Options
2.Bulk Packed in Standard Cartons
(small box or poly bag, extra cost required)
3.Master Carton 25x23x20cm
Standard Pallet 103x95x75cm
Not find the correct products? please see below more choices!
Hex Flange Bolt,More Options:
DIN6921 HEX FLANGE BOLTS
1.Surface Treatment Optional:
We offer various surface treatment/Coating Options!
White/Silver Zinc, Yellow Zinc, Black Zinc Plating,Ruspert Coating or Dacromet
48Hrs~500Hrs Salt Spray Test without Red Rust (Price Differs)
HDG, Zn/Al Flake Coating, Orgainic Coating & Mixed Coatings
500Hrs~3000Hrs Salt Spray Test without Red Rust (Price Differs)
2.Material options:
Carbon steel, Class 4.8, Class 8.8, Class 10.9, Class 12.9
SS302, SS304, SS316
Grade A2 or A4
3.Standard specifications:DIN/JIS/ASTM
Other standard specifications available!
Hex flange screw is a one-piece forged bolt with a hex washer head. The washer head always in 3 types, serrated flange, curved flange and smooth flange while all have various drive options. Please see below Transhow's products options
1, Flange Type: serrated flange, smooth flange, curved flange
2, Drive Types: Hex Wrench (full hex/curved hes), Slotted Hex (Cross & Slott)
More options of the similar products!
Refer products you also can get from us >>>
| Bolt Head | Hex | Round | Mushroom | T | Square | OVAL | CSK |
| Material | Carbon Steel | Stainless Steel | Alloy Steel | Brass | Copper | Bronze | Aluminium |
| Grade/Metric | 4.8 | 6.8 | 8.8 | 10.9 | 12.9 | ||
| Grade/ANSI | A307-A | A307-B | A307-C | J429 Gr 2 | J429 Gr 5 | J429 Gr 8 | J429 Gr8.2 |
| Standards | DIN | ISO | GB | ANSI | JIS | BS | UNI |
| Threads | UNC | UNF | 2A | 3A | T threads | Left Thread | ISO |
| Steel Grade | C1035 | C1045 | C1020 | C1010 | Q235 | A3 | Q195 |
| Surface | Plain | Black | Zinc | YZP | Dacromet | Ruspert | Nickle |
1.Production Facilities
Raw Material (Steel Wires)
4.Thread Cutting
Q1: Are you a factory or trading company?
A: We are the specialized supplier of fastener, can provide the best price.
Q2: How many years you do foreign trade?
A: We have more than 16 years experience in exporting products to worldwide countries; can provide the high quality fastener!
Q3: Do you have enough outputs?
A: We have enough stock in warehouses with abundant capital. We offer 24-hour services.
Q4: How to ensure that every process's quality?
A: Every process will be checked by our quality inspection department which insures every product's quality.
Q5: How to ensure the safety of long-distance transportation?
A: Professional packing teams which keep every packing safely.
Q6: Can you provide some sample?
A: Samples can be provided as your requirements.
