Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Your message must
be between 20-3,000 characters!
Submit Requirement
Thank You！
Your requirement has been sent. we will contact you quickly!
{"title":"Black Oxide Hex Head Rail Track Bolt Grade 8.8 Grade 10.9 Nut And Washer Set","imgUrl":"https:\/\/img.chinax.com\/nimg\/d1\/c4\/b369634f2bc215a1d2c6ecb21157-200x200-1\/black_oxide_hex_head_rail_track_bolt_grade_8_8_grade_10_9_nut_and_washer_set.jpg","attrs":{"Head type":"Hex Head","Minimum Order Quantity":"5000","Grade":"4.6\/4.8\/5.6\/5.8\/6.8\/8.8\/10.9\/12.9","Certification":"ISO9001"}}
{"title":"22x186 High Strength Rail T Bolt DIN Standard T Head Bolt For Railway Constructi","imgUrl":"https:\/\/img.chinax.com\/nimg\/84\/93\/9323fd0a8b4e50e45b76d2931ffa-200x200-1\/22x186_high_strength_rail_t_bolt_din_standard_t_head_bolt_for_railway_construction.jpg","attrs":{"Payment Terms":"L\/C,D\/A,D\/P,T\/T","Brand Name":"Sudelan","Model Number":"Hex Head Bolt","Diameter":"22mm"}}
{"title":"Black Round Headed Rail Track Bolt Fish Bolt For Joint Bar P43 P50 P65 P75 Steel","imgUrl":"https:\/\/img.chinax.com\/nimg\/76\/a0\/9fa6b98b5b460b9a5af6e330714a-200x200-1\/black_round_headed_rail_track_bolt_fish_bolt_for_joint_bar_p43_p50_p65_p75_steel_40cr_45_23.jpg","attrs":{"Supply Ability":"30000 per Day","Tensile strength":"800-1000 MPa","Payment Terms":"L\/C,D\/A,D\/P,T\/T","Minimum Order Quantity":"5000"}}
{"title":"High Strength Rail Stud Bolt Double End Threaded DIN 975 976 Grade 8.8 10.9 12.9","imgUrl":"https:\/\/img.chinax.com\/nimg\/84\/a4\/d844190eff7e653d28651676efe9-200x200-1\/high_strength_rail_stud_bolt_double_end_threaded_din_975_976_grade_8_8_10_9_12_9.jpg","attrs":{"Grade":"4.6\/4.8\/5.6\/5.8\/6.8\/8.8\/10.9\/12.9","Brand Name":"Sudelan","Diameter":"20-30mm","Weight per piece":"0.43 kg"}}
{"title":"Galvanized Rail T Bolt With Nut And Washer , Anti Rust Railway T Head Bolt","imgUrl":"https:\/\/img.chinax.com\/nimg\/bc\/b0\/57eadaa1136f9a934ef079178db4-200x200-1\/galvanized_rail_t_bolt_with_nut_and_washer_2c_anti_rust_railway_t_head_bolt_assembly.jpg","attrs":{"Supply Ability":"30000 Pics per Day","Brand Name":"Sudelan","Diameter":"20-30mm","Length":"50-200mm"}}
{"title":"Black Oxide Rail Hex Head Bolt High Strength Steel Blackened Railway Hex Bolt","imgUrl":"https:\/\/img.chinax.com\/nimg\/86\/10\/983d6c05e49cc74b7d5642fcbadd-200x200-1\/black_oxide_rail_hex_head_bolt_high_strength_steel_blackened_railway_hex_bolt.jpg","attrs":{"Headtype":"Square Head","Thread type":"Partial Thread","Length":"100-300 mm","Minimum Order Quantity":"5000"}}
{"title":"Square Head Fishbolt For Railway Fastening System , Grade 8.8 10.9 Rail Joint","imgUrl":"https:\/\/img.chinax.com\/nimg\/f3\/62\/776c0840f7ec683ab5d176eb9b20-200x200-1\/square_head_fishbolt_for_railway_fastening_system_2c_grade_8_8_10_9_rail_joint_bolt.jpg","attrs":{"Payment Terms":"L\/C,D\/A,D\/P,T\/T","Certification":"ISO9001","Strength Grade":"4.6\/4.8\/5.6\/5.8\/6.8\/8.8\/10.9\/12.9","Brand Name":"Sudelan"}}
Black Oxide Hex Head Bolt | Grade 8.8/10.9 | Nut & Washer Set
Black Oxide Hex Head Bolt with Nut and Washer is a high-strength, corrosion-resistant fastener solution designed for industrial-grade connections. Made of premium carbon steel with a uniform black oxide finish, this all-in-one kit eliminates the hassle of sourcing separate components, ensuring perfect compatibility, reliable clamping force, and long-term durability in dry to mildly corrosive environments.
Ideal for machinery assembly, structural steel, automotive, rail, and general engineering, our black oxide hex bolt sets meet strict DIN 931/DIN 933/ISO 4032 standards and are available in Grade 8.8, 10.9, and 12.9 for light to heavy-load applications.
A1: Black oxide provides moderate corrosion resistance for dry/indoor and mildly humid environments. For coastal, chemical, or highly humid conditions, we recommend oiling or upgrading to hot-dip galvanized (HDG) finish.
Q2: What's the difference between Grade 8.8, 10.9, and 12.9?
A2: Higher grades offer greater tensile strength:
8.8: General-purpose, medium load (machinery, furniture)
10.9: Heavy load (structural steel, automotive)
12.9: Extreme load (heavy machinery, rail)
Q3: Do you offer custom sizes or lengths?
A3: Yes. We provide OEM/ODM services for non-standard lengths, thread pitches, and packaging. Contact us with your drawings or specs.
Q4: What's your quality assurance process?
A4: Every batch undergoes raw material testing, heat treatment verification, coating inspection, and 100% dimensional checking. We provide SGS/ISO test reports upon request.
Q5: What's the lead time for bulk orders?
A5: Standard stock orders ship in 5-10 days; custom orders take 15-20 days. We prioritize urgent orders for key clients.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
2011
Total Annual:
50000000-100000000
Employee Number:
80~100
Ecer Certification：
Verified Supplier
Suzhou Sudelan Railway Parts Co., Ltd. is a professional manufacturer specializing in railway fastening system components. With a strong focus on quality, reliability, and technical expertise, the company is committed to providing high-performance products for railway infrastructure projects worldwi... Suzhou Sudelan Railway Parts Co., Ltd. is a professional manufacturer specializing in railway fastening system components. With a strong focus on quality, reliability, and technical expertise, the company is committed to providing high-performance products for railway infrastructure projects worldwi...
