ASTM A325 High Strength Structural Bolt Nut and Washers

• Material: Carbon Steel
• Type: Hexagon Head
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: ANSI
• Grade: 12.9
• Model NO.: BOLTS
• Application: Machinery, Environmental, Building
• Finish: Black
• Transport Package: Package 1
• Specification: 1100*800
• Trademark: M
• Origin: Ningbo
• HS Code: 73181500
• Production Capacity: 5000ton/Month

Product Description

Product Name	Astm a325 high strength structural bolt nut and washers
Material	20MnTiB
Standard	Astm A325
Size	M12-M16 1/2''-11/2''
Finish	Black, Zinc, HDG
Grade	A325

A325 Types

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TYPE 2	Withdrawn November 1991.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

A325 Connection Types

SC	Slip critical connection.
N	Bearing type connection with threads included in the shear plane.
X	Bearing-type connection with threads excluded from the shear plane.

A325 Mechanical Properties

Size	Tensile, ksi	Yield, ksi	Elong. %, min	RA %, min
^1⁄2 - 1	120 min	92 min	14	35
1^1⁄8 - 1^1⁄2	105 min	81 min	14	35

A325 Type 1 Chemical Properties

Heat Analysis	120ksi, %	150ksi, %
Carbon	0.30 - 0.52	0.30 - 0.48*
Manganese	0.60 min	0.60 min
Phosphorus	0.035 max	0.035 max
Sulfur	0.040 max	0.040 max
Silicon	0.15 - 0.30	-
Boron	0.003 max	0.003 max
Copper	-	-
Nickel	-	-
Chromium	-	-
Molybdenum	-	-
*Carbon 0.35-0.53% for 1-1/2” A490/150ksi bolts

A325 Type 3 Chemical Properties

Heat Analysis	120ksi, % Comp A	120ksi, % Comp B	120ksi, % Index	150ksi, % Index
Carbon	0.33 - 0.40	0.38 - 0.48	0.30 - 0.52	0.30 - 0.53
Manganese	0.90 - 1.20	0.70 - 0.90	0.60 min	0.60 min
Phosphorus	0.035 max	0.035 max	0.035 max	0.035 max
Sulfur	0.040 max	0.040 max	0.040 max	0.040 max
Silicon	0.15 - 0.30	0.30 - 0.50
Copper	0.25 - 0.45	0.20 - 0.40	0.20 - 0.60	0.20 - 0.60
Nickel	0.25 - 0.45	0.50 - 0.80	0.20 min*	0.20 min*
Chromium	0.45 - 0.65	0.50 - 0.80	0.20 min	0.20 min
Molybdenum		0.06 max	0.10 min*	0.10 min*
*Either Nickel or Molybdenum must be present in the amount specified *Corrosion Index based on ASTM Guide G101

The Ningbo Beilun Milfast Metalworks Co., Ltd. is a professional fasteners company in Ningbo, specialize in the Threaded Rods, Studs, Bolts, Nuts, Washers and the Stamping metal parts. With the products quality and good service, we have gained the credit from our customers.

The Milfast Metalworks products include various different specifications and types: THREADED RODS, STUD BOLTS, HEAVY HEX BOLTS, STRUCTURAL BOLTS, HEX BOLTS, FLANGE BOLTS, TRACK BOLTS, CARRIAGE BOLTS, HEAVY HEX NUTS, STRUCTURAL NUTS, HEX NUTS, FLANGE NUTS, CASTLE NUTS, SQUARE NUTS, FLAT WASHERS, SPRING WASHERS, SPECIAL FASTENERS AND OTHER VARIOUS METAL PARTS.

The materials for these products are carbon steel, alloy steel, stainless steel. In addition, we also can provide special fasteners according to customers′ drawing or samples.

Ningbo Beilun Milfast Metalworks Co.,Ltd produce high-quality fasteners standard Threaded Rods, bolts, nuts, stud bolts, washers as follows, 
ASTM A325/A325M/A490/A490M Type 1 Structural Bolts, A193/A193M Gr.B7/B7M Heavy Hex Bolts, ASTM A307 Hex Bolt, DIN912 Socket Head Cap Screws, DIN6914 Structural Bolts, EN14399-3/EN14399-4 Heavy Hex Bolts, DIN931/933 Hex Bolts, DIN960/961 Hex Bolts, ISO4014/4017 Hex Bolts, DIN6921 Flange Bolts
ASTM A194/A194M Gr. 2H/2HM, 7/7M Heavy Hex Nuts, A563/A563M Gr. C/DH/10S Heavy Hex Nuts, DIN6915 Structural Nuts, EN14399-3/EN14399-4 Heavy Hex Nuts, DIN934 Hex Nuts, ISO4032 Hex Nuts, DIN6923 Flange Nuts
ASTM A193/A193M Gr. B7/B7M, B16, B8/B8M, ASTM A320 Gr.L7/L7M Threaded Rod/Stud Bolts, DIN975 Threaded Rods
ASTM F436 Hardened Flat Washer, SAE/USS Flat Washer, ISO7089 Round Flat Washer, DIN125 Flat Washers, DIN6916 Structural Washer, EN14399-5/EN14399-6 Flat Washer, DIN127 Spring Washer, F959 DTI Washer

Based on the standard system, Ningbo Beilun Milfast Metalworks Co.,Ltd control each link to ensure the factory can produce the high-leave quality products, from raw material to the production process in strict management to ensure products quality. It successfully won the customer very satisfactory according to this process.

The Milfast Metalworks main products ASTM A193-B7 Threaded Rods, A194 Gr. 2H Heavy Hex Nuts, ASTM A325 Structural Bolts, ASTM F436M Hardened Flat Washers, they are widely spread all over the world, include the Country from America, Europe, Middle East, Africa, Etc.

We′re confident to provide you with high-quality products, competitive prices, timely delivery and perfect after-sales service. The Milfast target is to create a win-win business model and establish long-term business relationship with our partner in future.