Holo-Krome Grade 9 Heavy Hex Cap Screw – Imperial

Hex Cap Screws

Holo-Krome Grade 9
8640/8740 Alloy Steel

Unified National Round Coarse/Fine

H418 — UNRC Ecoguard Coating

H428 — UNRF Ecoguard Coating

ASME B18.2.1

Holo-Krome Critical Application Fasteners
UNRC
Diameter d 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9 1-8
Diameter Code 014 016 018 020 024 025 026 028 030 034
Length Code * = Stocked (Sold in bulk quantities)
1/2 0050 * * *
3/4 0075 * * * * *
1 0100 * * * * * * *
1 1/4 0125 * * * * * * * *
1 1/2 0150 * * * * * * * * * *
1 3/4 0175 * * * * * * * * * *
2 0200 * * * * * * * * * *
2 1/4 0225 * * * * * * * * * *
2 1/2 0250 * * * * * * * * * *
2 3/4 0275 * * * * * * * * * *
3 0300 * * * * * * * * * *
3 1/4 0325 * * * *
3 1/2 0350 * * * * * * * * * *
4 0400 * * * * * * * * * *
4 1/2 0450 * * * * * * * *
5 0500 * * * * * * * *
5 1/2 0550 * * * * * * *
6 0600 * * * * * * *
7 0700 * * * * *
8 0800 * * * * *
9 0900 * * * *
10 1000 * * * *
11 1100 * * * *
12 1200 * * * *
Order Number -> 1/4 x 2-1/2 = H418-014-0250 (Diameter Code x Length Code)

 

UNRF
Diameter d 1/4-28 5/16-24 3/8-24 7/16-20 1/2-20 9/16-18 5/8-18 3/4-16 7/8-14 1-14
Diameter Code 014 016 018 020 024 025 026 028 030 034
Length Code * = Stocked (Sold in bulk quantities)
1/2 0050 * *
3/4 0075 * * *
1 0100 * * * * * *
1 1/4 0125 * * * * * *
1 1/2 0150 * * * * * * * *
1 3/4 0175 * * * * * * *
2 0200 * * * * * * * * *
2 1/4 0225 * * * *
2 1/2 0250 * * * * * * * * * *
2 3/4 0275 * *
3 0300 * * * * * * * * * *
3 1/2 0350 * * * * * * * *
4 0400 * * * * * * *
4 1/2 0450 * * * * *
5 0500 * * * * *
5 1/2 0550 * * * *
6 0600 * * * * *
7 0700 * * * * *
8 0800 * * * * *
9 0900 * * * *
10 1000 * * *
11 1100 * * *
12 1200 * * *
Order Number -> 1/4 x 2-1/2 = H428-014-0250 (Diameter Code x Length Code)

 

TOUGH gets TOUGHER

HOLO-KROME introduces its lineup of MADE IN THE USA Grade 9 products. Heavy machinery and equipment are often subject to some of the harshest conditions, both environmental and fatigue. Not only are these pieces of equipment designed to withstand these conditions, the fasteners used in assembly should be of equal strength. HOLO-KROME prides itself in manufacturing a line of world-class, 100% domestically manufactured, Grade 9 Hex Cap Screws, completely capable of out performing the competition.

PRODUCT SPECIFICATIONS

  • 180,000psi tensile (similar to ASTM A574)
  • 1000-hour EcoGuard™ Coating
  • Consistent Torque-Tension Relationship
  • No risk of hydrogen embrittlement
  • 1-to-1 replacement for current offering with improved corrosion resistance
    performance
  • Holo-Krome Quality
  • Full Stocking Product Line offering (10 diameters standard, 265 skus)
  • DFARS Compliant / 100% USA Melt
  • RoHS, ELV and REACH Compliant

TARGET INDUSTRIES & APPLICATIONS:

  • Construction
  • Forestry
  • Transportation
  • Agriculture
  • Machine Builders
  • Foundries
  • Underground Earth Moving Equipment
  • Cranes & Rigging
  • Highway Signage
  • Wastewater Processing Plants

H428 - PRODUCT PHOTO - HK G9 SONY DSCLoading of iron oreWind farm near Tehachapi, California

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