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Grade 8.8 Screw

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  • Grade 8.8 Screw

Class 8.8 Hex Screw and Grade 8.8 Socket Head Cap Screws manufacturer & exporter in India

8.8 Screw is manufactured using medium carbon steel that has been quenched and tempered. It exhibits good tensile strength and performs well in most environments. Grade 8.8 Screw is a fastener that has a threaded shank, which is driven by turning. The threads stop the screw from pulling out. It has a recessed area that accepts a tool, such as a drill or screwdriver, which turns the screw into place. There are various shapes of Screw Grade 8.8 which are used depending on the type of materials being fastened, the intended appearance, and the type of driving device. 8.8 Hex Screw is designed to mate with a machine thread, also known as hex-cap screws, setscrews, or machine screws and is used to secure an object within or against another object. It is a headed fastener with external machine screw threads. It is used to fasten two or more parts together and allow for maintenance and repair disassembly. Grade 8.8 Socket Head Cap Screws are heavy duty screws. It is externally strong threaded screws which offer the highest strength for commercial fasteners, and are the ideal fastener where there is not sufficient space for wrenches or sockets. It is usually preferred in applications which require an aesthetically pleasing fastener for exposed views but still have enough tensile strength for better load handling. They are mostly used in an application like the construction of plastic injection molds, hydraulic braking system and home furniture, power plant parts and transmission tools.

Grade 8.8 Screw

Grade 8.8 Screw

8.8 Hex Screw

8.8 Hex Screw

Grade 8.8 Socket Head Cap Screws

Grade 8.8 Socket Head Cap Screws

Manufacturer and supplier of Hsfg Grade 8.8 Lag Screw, Class 8.8 Machine Screw and BS 3692 grade 8.8 Set Screw, check 8.8 steel screw tensile strength, properties and hardness

Grade 8.8 Screw

Table of contents

Grade 8.8 Screw Specifications

Manufacturing Grade 8.8 Coach Screw, Hexagon Head Screw and Class 8.8 Hex Cap Screw material in all Metric sizes, view 8.8 Screw torque and head types

Grade 8.8 Screw Sizes
  • Cold Forming screw: M2-M24
  • Hot Forging screw: M24-M100, 1-1/2” Dia, up to 1100mm lg
  • CNC Machining for M100 screw / 4” Dia, up to 1500mm lg

Manufacturer of M2, M3, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M45, M48 to M160 and Custom Metric Grade 8.8 Screw
BS 3692 grade 8.8 Screw Size Metric
  • Dia: M10 - M110
  • Length: 12 - 1200MM
Grade 8.8 Screw Size Inch
  • Dia: 1/2" - 4.0"
  • Length: 1/2" - 52"
Standard

Manufacturer of Grade 8.8 Screw as per IS, BS, UNI, CSN, ANSI, GB, ASME, ASTM, DIN, ISO, JIS, EU, IFI, PN, and all International Standards
Grade 8.8 Screw Length 3 mm to 200 mm
Class 8.8 Screw US Threads METRIC, BSW, BSF, Unified national coarse (UNC), UNR, Unified national extra fine (UNEF), UNJC and UNJF threads, UNK, Unified national fine (UNF), Constant-pitch threads
Grade 8.8 Screw UTS - Unified Thread Standard UNC, UNF, UNEF, NPT, NPTF
Class 8.8 Screws Head
  • Slotted Head Drive
  • Phillips Head Drive
  • Pozidriv
  • Square Drive
  • Six Lobe Drive
  • Allen Drive
Material Origin Grade 8.8 Screw are Western European. Eastern origin possible on request.
Grade 8.8 Screw Surface Finish & Coating
  • Ptfe Coated Grade 8.8 Screw
  • Hot Dipped Galvanized
  • ZAC (Zinc Alluminium Flake Coating)
  • Dacroment
  • Black oxide
  • Phosphate
  • Teflon
  • Xylon
  • Zinc Electro Plating (Hexavalent or Trivalent Chrome)
  • Zinc Phosphate (yellow, blue, white, black)
  • Manganese Phosphate
  • Plated zinc-nickel
  • Anodizing
  • Geometry
  • Self-Colour
  • Cadmium
  • Nickel plated
  • Sherardized
  • Bright Zinc Plated (BZP)
  • Hot Dip Galvanised (HDG)

All BS 3692 grade 8.8 Fasteners surface finishes can be supplied including Galvanised, Zinc, Sherardized, Dacromet, Electroless Nickel, Geomet & PTFE.
Other Grade 8.8 Screw manufacturers Omni, APL, Kundan, Deepak Fasteners, Unbrako, Sundaram Precision, Infasco, Caparo, EBY Fastener, SPAX® Screws, GKW Etc.
8.8 Grade Screw types Socket Head Cap Screw, Self Tapping Screws, Self Drilling Screws, Hexagon Screw, Hex Cap Screws, Socket Cap Screws, Countersunk Slotted Screws, Machine Screws, Allen Cap Screws, Set Screws, Grub Screws, Hex Lag Screws, Deck Screws, Wood Screws, Concrete Screws, Fully Threaded Screws, Sheet Metal Screws, Self Drilling Screws, Panel Screws, Thread Cutting Machine Screws, Socket Screws, Masonry Screws, Sammys Screws, Anchor Screws, Coach Screws, Cap Screw
ISO - International Organization for Standardization
Why Jignesh Steel?
  • An Indian manufacturer, established in Year 2008
  • Wide International network : Western Europe, Eastern Europe, Middle East, Southeast Asia, North America, and South America
  • Best Price in India compared to Grade 8.8 Screw manufacturers in China
  • Highly professional and technical team
  • Always final Inspection before shipment
  • Pre-production Grade 8.8 Steel Fasteners sample before mass production
  • High precision threads
MOQ 5 pieces
Preferred Grade 8.8 Screw Drawing Formats JPEG, PDF, CAD, STP, IGS
Free Samples Yes
Delivery time Regular product is about 7-15 days
Payment Terms T/T, Western Union, Paypal, L/C or Trade Assurance 30% deposit & balance before shipping
Port of Dispatch Mumbai or Kalamboli ports in Maharashtra state of India
Class 8.8 Screw Application and Uses Industrial, Wind tower, Railway, Nuclear power, Construction, Electronic, and Automotive industry
Ask for Test Certificates from Grade 8.8 Screw manufacturers
  • Manufacturer Test Certificate (MTC) as per EN 10204 / 3.1,
  • BS 3692 grade 8.8 Screw Tensile testing to ISO 898-1
  • Hardness testing to ISO 6508-1
  • Suitability for preloading to EN 14399-2
  • Tri-Roll Thread Comparators
  • 8.8 Grade Screw Charpy Impact testing in accordance with ISO 148-1
  • Suitability test for calibrated preload to EN 14399-10
  • Calibrated gauges and tools

Class 8.8 Socket Head Cap Screw Dimensions

Buy High Tensile Grade 8.8 Socket Cap Screw, and Class 8.8 Grub Screw in all Thread Types and Sizes at factory price

American National Standard ANSI/ASME B18.3.1M Grade 8.8 Socket Head Cap Screws

Class 8.8 Socket Head Cap Screw Dimensions

BS 3692 grade 8.8 Screw Nom. Size Thread Pitch Body
Diameter
D		 Head
Diameter
A		 Head
Height
H		 Chamfer
or
Radius
S		 Hexagon
Socket
Size
J		 Spline
Socket
Sizea
M		 Key
Engagement
T		 Transition
Dia.
B
Max Min Max Min Max Min Max Nom. Nom. Min Max
M1.6 × 0.35 1.60 1.46 3.00 2.87 1.60 1.52 0.16 1.5 1.829 0.80 2.0
M2 × 0.4 2.00 1.86 3.80 3.65 2.00 1.91 0.20 1.5 1.829 1.00 2.6
M2.5 × 0.45 2.50 2.36 4.50 4.33 2.50 2.40 0.25 2.0 2.438 1.25 3.1
M3 × 0.5 3.00 2.86 5.50 5.32 3.00 2.89 0.30 2.5 2.819 1.50 3.6
M4 × 0.7 4.00 3.82 7.00 6.80 4.00 3.88 0.40 3.0 3.378 2.00 4.7
M5 × 0.8 5.00 4.82 8.50 8.27 5.00 4.86 0.50 4.0 4.648 2.50 5.7
M6 × 1 6.00 5.82 10.00 9.74 6.00 5.85 0.60 5.0 5.486 3.00 6.8
M8 × 1.25 8.00 7.78 13.00 12.70 8.00 7.83 0.80 6.0 7.391 4.00 9.2
M10 × 1.5 10.00 9.78 16.00 15.67 10.00 9.81 1.00 8.0 … 5.00 11.2
M12 × 1.75 12.00 11.73 18.00 17.63 12.00 11.79 1.20 10.0 … 6.00 14.2
M14 × 2b 14.00 13.73 21.00 20.60 14.00 13.77 1.40 12.0 … 7.00 16.2
M16 × 2 16.00 15.73 24.00 23.58 16.00 15.76 1.60 14.0 … 8.00 18.2
M20 × 2.5 20.00 19.67 30.00 29.53 20.00 19.73 2.00 17.0 … 10.00 22.4
M24 × 3 24.00 23.67 36.00 35.48 24.00 23.70 2.40 19.0 … 12.00 26.4
M30 × 3.5 30.00 29.67 45.00 44.42 30.00 29.67 3.00 22.0 … 15.00 33.4
M36 × 4 36.00 35.61 54.00 53.37 36.00 35.64 3.60 27.0 … 18.00 39.4
M42 × 4.5 42.00 41.61 63.00 62.31 42.00 41.61 4.20 32.0 … 21.00 45.6
M48 × 5 48.00 47.61 72.00 71.27 48.00 47.58 4.80 36.0 … 24.00 52.6

Grade 8.8 Screws Types

Fully heat-treated M8 Screw Class 8.8, BS 4190 grade 8.8 Hex Head Screw and Din 6921 Screw Hex Flange manufacturer in Mumbai

Grade 8.8 Hex Screw

Grade 8.8 Hex Screw

BS 3692 grade 8.8 Lag Screw

BS 3692 grade 8.8 Lag Screw

8.8 Grade Socket Head Cap Screw

8.8 Grade Socket Head Cap Screw

Class 8.8 Machine Screw

Class 8.8 Machine Screw

Grade 8.8 Steel Set Screw

Grade 8.8 Steel Set Screw

Hsfg Grade 8.8 Coach Screw

Hsfg Grade 8.8 Coach Screw

BS 4190 grade 8.8 Grub Screw

BS 4190 grade 8.8 Grub Screw

High Tensile 8.8 Grade Cap Screw

High Tensile 8.8 Grade Cap Screw

Grade 8.8 Hex Head Screw

Grade 8.8 Hex Head Screw

BS 3692 grade 8.8 Hexagon Head Screw

BS 3692 grade 8.8 Hexagon Head Screw

8.8 Grade Screw Hex Flange

8.8 Grade Screw Hex Flange

Class 8.8 Square Head Screw

Class 8.8 Square Head Screw

 

Uses of Grade 8.8 Screw

  • Nuclear Energy Sector
  • Defence Industry
  • Sea Water Equipment
  • Offshore & Chemical Industry
  • Electrical & Agriculture Industry
  • Engineering & Aerospace Industry
  • Grade 8.8 Screw for Construction
  • High quality BS 3692 grade 8.8 Petrochemical Screws
  • High Strength 8.8 Grade Screw and Nuts for Automotive industry
  • Large size Class 8.8 Screw for Oil & Gas Industries
  • Metric Grade 8.8 Steel Hex Screw for Power Generation
  • Grade 8.8 Screw suitable for Off-Shore Oil Drilling
  • Heavy duty Hsfg Grade 8.8 Screw for Heat Exchangers

Grade 8.8 Screw Testing Tool & Equipment

  • Coordinate Measuring Machine
  • Image measuring instrument
  • Routine inspection of calipers
  • Roughness tester used to test the surface finish of a Grade 8.8 Screw
  • Micrometer for accurate measurement of Grade 8.8 Screw
  • Thread gauge and Smooth plug gauge used to check Grade 8.8 Screw quickly

8.8 Grade Screws Sizes

Class 8.8 Screw Size Body Dia Hex Key Size Head Height Head Dia Maximum Thread Length Minimum Thread Length
No. 0 0.06 0.05 0.06 0.096 5/8 3/8
No. 1 0.073 1/16 0.073 0.118 7/8 3/8
No. 2 0.086 5/64 0.086 0.14 7/8 1/2
No. 3 0.099 5/64 0.099 0.161 7/8 1/2
No. 4 0.112 3/32 0.112 0.183 11/8 11/16
No. 5 0.125 3/32 0.125 0.205 1 11/16
No. 6 0.138 7/64 0.138 0.226 11/8 11/16
No. 8 0.164 9/64 0.164 0.27 11/4 3/4
No. 10 0.19 5/32 0.19 0.312 13/8 15/16
No. 12 0.216 5/32 0.216 0.345 11/4 15/16
1/4 0.250 3/16 1/4 3/8 11/2 15/16
5/16 0.3125 1/4 5/16 15/32 1-3/4 1-1/16
3/8 0.375 5/16 3/8 9/16 2 1-3/16
7/16 0.438 3/8 7/16 21/32 2-1/4 13/16
1/2 0.500 3/8 1/2 3/4 2-1/2 1-3/8
9/16 0.5625 7/16 9/16 27/32 2-7/16 1-5/8
5/8 0.625 1/2 5/8 15/16 3 1-5/8
3/4 0.750 5/8 3/4 11/8 3-1/2 1-7/8
7/8 0.875 3/4 7/8 15/16 3-3/4 2-1/16
1 1.000 3/4 1 11/2 4-1/2 2-1/4
1-1/8 1.125 7/8 1-1/8 111/16 4-21/32 2-13/16
1-1/4 1.250 7/8 1-1/4 17/8 5-3/32 3-1/8
1-1/2 1.500 1 1-1/2 21/4 6-5/64 3-3/4
1-3/4 1.750 11/4 1-3/4 25/8 7-1/8 4-3/8
2 2.000 11/2 2 3 8-7/64 5

Grade 8.8 Screw Torque Chart

Torque in pounds/ foot
  Hex head cap screws
Socket head cap screw Grade 8.8
M4 x .70 1.65
M5 x .80 4.13
M6 x 1.0 7.1
M7 x 1.0 12
M8 x 1.0 18
M8 x 1.25 17
M10 x 1.0 39.
M10 x 1.25 36
M10 x 1.5 34
M12 x 1.25 65
M12 x 1.5 63
M12 x 1.75 59
M14 x 1.5 102
M14 x 2 94
M16 x 2 146
M18 x 2.5 210
M20 x 2.5 292

Grade 8.8 Tightening torques - Hex Socket and Flat Heads

Maximum Tightening Torques (Nm)
Screw Standard DIN 6912 DIN 7894 ISO 14581
Material / Grade Grade 8.8 Screw Grade 8.8 Screw Grade 8.8 Screw
Thread Size
M3 - 1 1
M4 2 2 2
M5 6 4 5
M6 9 8 9
M8 20 12 -
M10 40 35 -
M12 65 50 -
M14 110 - -
M16 180 110 -
M18 - - -
M20 280 200 -
M22 - - -
M24 - 390 -

Chemical Composition of Grade 8.8 Screw

Grade/ Class Material and heat treatment Chemical composition (analysis on the product) % Minimum hardening temperature °C
C P S B
minimum max max max max
8.8 Alloy/ Carbon steel (B, Mn, Cr), quenched and tempered 0,15(3) 0,40 0,025 0,025 0,003 425
Carbon steel Quenched and tempered 0,25 0,55 0,025 0,025
Alloy steel Quenched and tempered 0,20 0,55 0,025 0,025

BS 3692 grade 8.8 Screw Properties

Characteristics Strength class 8.8 Screw
d≤16mm d>16mm
Tensile strength
Rm (MPa)		 nom 800 800
minimum 800 830
Yield strength Rm (MPa)
ReL up to 6.8 - Rp0,2 from 8.8		 nom 640 640
minimum 640 660
Elongation after fracture, a% minimum 12 12
Necking Z%   52 52
Vickers hardness (HV)
F ≥ 98 N		 minimum 250 255
max 320 335
Brinell hardness (HB)
F = 30D2		 minimum 238 242
max 304 318
Rockwell hardness
HRB up to 6.8 - HRC from 8.8		 minimum 22 23
max 32 34
Resilience KV (J) – 20°C(1) minimum 27 27

Grade 8.8 Screw Price List

Products FOB Price US $
Grade 8.8 m8 Hilti Expansion Anchor Screws US $0.01-$0.02/ Piece
8.8 grade Carbon steel blue white yellow black zinc plated concrete screws US $0.01-$0.50/ Piece
black oxide DIN 7984 8.8 12.9 grade low head socket cap screw US $0.001-$0.10/ Piece
Grade 8.8 galvanized pan head torx drive screw M3 M4 M5 M6 M8 US $0.01-$0.10/ Piece
m3 m10 black zinc plated Grade 8.8 self tapping screw US $0.01/ Piece
Galvanized Grade 8.8 Hex Head Self Drilling Screws and self-drilling tapping screw US $0.05/ Piece
8.8 grade DIN 912 black allen hex socket head cap screw US $0.01/ Piece
High Tensile Grade 8.8 Hex Head Screws for Heavy Duty US $0.05-$0.10/ Piece
DIN912 grade 8.8 grade hexagon socket head screw US $0.01-$0.20/ Piece

Call us or send us an email to sales@jigneshsteel.com for more details. Always compare our price with other Grade 8.8 Screw manufacturers in India or China

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