Countersunk Hex Socket Cap Bolt 8.8 10.9 12.9 Grade

Short Description:

Hexagon bolts are hexagon head bolts (partial thread) – grade C and hexagon head bolts (full thread) – grade C, also known as hexagon head bolts (rough) hair hexagon head bolts, black iron screws. Commonly used standards can be found in: Din931, Din933 GB5782,GB5783, ISO4014, ISO4017, etc.

  • Standard: GB, DIN, ISO, JIS
  • Size: M3-M100; 1/4-4" or non-standard
  • Material: Carbon steel, stainless steel, brass , alloys steel etc.
  • Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G.
  • Hex head bolt and nut Grade: 4.8, 6.8, 8.8, 10.9, 12.9, ASTM A194 2, 2H, 4, 7, 7M,8, 8M; A563 Gr. A, C, DH, DH3
  • Packing: Box, carton or plastic bags, then put on pallets, or according to the demand of the customers

Product Detail

Product Tags

Product Introduction

Hexagon bolts refer to fasteners composed of heads and screws. The bolts are divided into iron bolts and stainless steel bolts according to the material. According to the grade of iron, there are 4.8 grade bolts , 8.8 grade bolts, 10.9 grade and 12.9 grade. Stainless steel bolts are made of stainless steel SUS201 bolts, SUS304 bolts, and SUS316 bolts.

Product Classification

Hexagon Bolt Classification:

1. According to the force mode of the connection, there are ordinary ones and those with reaming holes. The bolts used for reaming holes should be matched with the size of the holes and are used when they are subjected to lateral force.
2. According to the shape of the head, there are hexagonal head, round head, square head, countersunk head, etc. Generally, the countersunk head is used in the place where the surface is smooth without protrusion after connection, because the countersunk head can be screwed into the part. The head can also be screwed into the part. The tightening force of the square head can be larger, but the size is large. The hex head is the most commonly used.

Product Display

Countersunk Hex Socket Cap Bolt (1)
Countersunk Hex Socket Cap Bolt (2)
Countersunk Hex Socket Cap Bolt (3)

Matters Needing Attention

Customer choose product should be consider as follows:

1. Selected material, material fidelity, quality assurance
2. Rust and corrosion resistance, strong and durable, complete categories
3. The thread is clear, the product has no burr, and the appearance is clean and flat
4. Simple operation, convenient and fast, saving labor cost


Q1: Can you buy a samples placing orders?
A1: Yes,we welcome sample order to test and check quality.Mixed samples are acceptable.

Q2: What’s your leading time?
A2: It depends on the order quantity and the season you place the order.-Usually we can ship within 7-15 days for small quantity, and about 30 days for large quantity.

Q3: What is your payment term?
A3: T/T,Western Union,MoneyGram,and Paypal .This is negotiable.

Q4: What is the shipping method ?
A4: It could be shippied by sea,by air or by express, You can confirm with us before order.

Q5: How do you make your business long-term and good relationship?
A5: We keep good quality, competitive price and Excellent after-sales service to ensure our customers benefit.

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