There are clear standards in GB/T 3098.1, and the hardness value of bolts can also be found. That is to say, as long as the performance level of the bolt is provided, it is equivalent to defining the strength of the bolt.
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Drill Tool Wall Mounted Base Hanger Compatible Motorized Stand Set for Makita18V Lithium-lon Tools - 1-10 Pack with Screws
Aliexpress UK
Description:10.9 Carbon Steel Material, 1mm Thread Pitch, Hex Key Hex Socket Countersunk Flat Head Key Bolts Screws.Countersunk bolts is anti-corrosion,rustless,non-pollution and high-hardness.It is widely used in industrial.
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Household Cork Metal Table Leg Set for Coffee Tables and Dining Tables, 4 Piece Black Adjustable Screw Floor Protector
Aliexpress UK
M3.9 16 M4.2 60 M4.8 60 M6.3 19. M3.9 19 M4.8 63 M6.3 25. M3.9 25 M4.8 70 M6.3 32. M3.9 32 M4.8 75 M6.3 38. M3.9 38 M4.8 80 M6.3 50. M3.9 50 M6.3 63. M3.5 13 M4.2 13 M4.8 13 M5.5 19. M3.5 16 M4.2 16 M4.8 16 M5.5 25.
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Garden Tool Parts Accessories Chainsaw Attachment 5200 Guide Bar Adjusting Screw Iron Cover Plate
Aliexpress UK
Description: 304 Stainless Steel Material, Phillips Socket Flat Head, Metric Countersunk Screws M3 x 20mm.
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2pcs Corner Brackets Stainless Steel Furniture Angle Shelf Connector Cabinet Support Fixing Frame Black Corner Brace with Screws
Aliexpress UK
Further details are as follows BA Brass Roundhead Screws. BA Steel Roundhead Screws. BA Raised Csk Screws Stainless. BA Raised Csk Screws Brass. Slotted Countersunk Screws. Pozi Countersunk Screws. Socket Countersunk Screws.
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C5 Ballscrew DFU3205 DFU3210 customized End Machined CNC parts Ball Nut Housing BK BF Mode use for 3D printer Ball Screw
Aliexpress UK
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20pcs Self-tapping Screws Cabinet Bracket Laminate Support Glass Studs Pegs Nonslip Partition Nail For Wooden Cabinets Wardrobes
Aliexpress UK
Material: Brass. Surface: Untreated.
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1Set Cabinet Closet Door Ball Catch Adjustable Door Latch Set Spring Roller Ball Door Stopper with Screws Furniture Hardware
Aliexpress UK
Description: Phillips drive has an x-shaped slot that accepts a Phillips driver. Flat head is cone shaped for use in countersunk holes and has a flat top that fits flush with the mated surface. Machine screws are used with nuts or screwed directly into a threaded receptacle to fasten metal parts together. Measured from the underside of the head to the tip of the screw to obtain fastener length. If nuts are needed, use with nuts of the same finish and threading for proper fit.
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4Pcs Sets Hinge Repair Plate Kitchen Cabinet Door Hinges Mounting Plate with Screw Flat Fixing Brackets Furniture Hardware To
Aliexpress UK