Anchor Bolts (Straight/Hooked) M20×400 8.8 45# Black

Specifications

Standard: GB/T 799
SKU: AB-000039
Nominal Diameter: M20
Length: 400 mm
Material: 45#
Grade: 8.8
Finish: Black
Unit Weight: 1300 g/pc Geometry-based estimate, not an inspection weight, for quotation and freight planning
Type: Standard Part

Quantity (pcs)

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Standard Basis

GB/T 799

Common equivalents below; confirm dimensions and drawing before substitution.

Spec Range

M20 × 400mm · 同族 50 个规格

This SKU is sourced per order; other lengths/materials in this family below.

Material & Grade

45# · 8.8

Quenched & tempered, Rm≥800 MPa (Rp0.2=640), standard high-strength

Surface & Finish

Black

Black oxide: light protection, use with oil or grease

Standard Equivalents

Equivalence is based on published standard-family information (Identical = interchangeable; Equivalent = dimensions/tolerances may differ, verify drawings before substitution).

System	Standard	Equivalence	Note
GB/T	GB/T 799 Primary	Identical	Primary standard from source content

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Where It Fits

Heavy-Duty / Structural

8.8 quenched & tempered, equipment erection, structural joints, vibration duty

Custom to Drawing

Lengths/materials/grades not listed can be manufactured to drawing or standard

FAQ

MOQ and lead time?

Sourced per order or made to drawing. MOQ and lead time are confirmed at quote time by quantity, material and finish. Other sizes in this family are listed above; unlisted specs can be sourced to your drawing.

Can material or grade be substituted?

Current grade: Quenched & tempered, Rm≥800 MPa (Rp0.2=640), standard high-strength. Swapping grade/material changes strength and corrosion resistance (e.g. 8.8→10.9 raises strength, 304→316 raises chloride resistance), re-check design load and environment before substitution.

How do I choose the finish?

Black oxide: light protection, use with oil or grease. Other finishes (HDG, Dacromet, electro zinc) can be quoted on the same size.