A325M Assembly 2HM Hex Nut UNF Galvanized Hex Head Screws Half Thread

Brand Name:PM
Certification:ISO
Model Number:M6-M64, 1/4"-4"
Minimum Order Quantity:100PCS
Delivery Time:15-25DAYS PER CONTAINER
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A325M assembly 2HM hex nut half thread UNF heavy hex bolts


There are several ASTM bolting specifications that require a heavy hex head – larger than a standard or finished hex head. These specifications include: A193, A320 and A307B. Although A325 and A490 bolts also require a heavy hex head, they refer to Structural Bolts for dimensional specifications, since structural bolts have shorter thread lengths than standard heavy hex bolts.

SIZE: 1/4" - 1.1//2", M6 -M36. And 600mm Max length.

STANDARD: ASME B18.2.6

THREAD: ASME B1.1 , UNC, UNF, CLASS 2A

FINISHED: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Dacromet, H.D.G.

A325 Types
TYPE 1Medium carbon, carbon boron, or medium carbon alloy steel.
TYPE 2Withdrawn November 1991.
TYPE 3Weathering steel.
TFully threaded A325. (Restricted to 4 times the diameter in length)
MMetric A325.

A325 Mechanical Properties
SizeTensile, ksiYield, ksiElong. %, minRA %, min
1/2-1"120 min92 min1435
1.1/8"-1.1/2"105 min81 min1435


A325 Type 1 Chemical Properties
Heat Analysis120ksi, %150ksi, %
Carbon0.30 – 0.520.30 – 0.48*
Manganese0.60 min0.60 min
Phosphorus0.035 max0.035 max
Sulfur0.040 max0.040 max
Silicon0.15 – 0.30-
Boron0.003 max0.003 max
Copper--
Nickel--
Chromium--
Molybdenum--

A325 Type 3 Chemical Properties
Heat Analysis120ksi, % Comp A120ksi, % Comp B120ksi, % Index150ksi, % Index
Carbon0.33 – 0.400.38 – 0.480.30 – 0.520.30 – 0.53
Manganese0.90 – 1.200.70 – 0.900.60 min0.60 min
Phosphorus0.035 max0.035 max0.035 max0.035 max
Sulfur0.040 max0.040 max0.040 max0.040 max
Silicon0.15 – 0.300.30 – 0.50
Copper0.25 – 0.450.20 – 0.400.20 – 0.600.20 – 0.60
Nickel0.25 – 0.450.50 – 0.800.20 min0.20 min
Chromium0.45 – 0.650.50 – 0.800.20 min0.20 min
Molybdenum0.06 max0.10 min0.10 min
A325 RECOMMENDED HARDWARE
TypeFinishNutWasher
Type 1plainA563 Grade C, C3, D, DH, DH3F436 Type 1
galvanizedA563 Grade DHF436 Type 1
Type 3plainA563 Grade C3, DH3F436 Type 3

China A325M Assembly 2HM Hex Nut UNF Galvanized Hex Head Screws Half Thread supplier

A325M Assembly 2HM Hex Nut UNF Galvanized Hex Head Screws Half Thread

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