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Stanley & Monarch N-6542 / 21-001 Heavy-Duty Bi-Fold Closet Door Pivot, Jamb Bracket & Guide Repair Kit Engineering Diagram
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SPECFOUNDRY SKU: SF-WIN-112 · BRAND REF: Prime-Line / Stanley / Monarch

Stanley & Monarch N-6542 / 21-001 Heavy-Duty Bi-Fold Closet Door Pivot, Jamb Bracket & Guide Repair Kit

Stamped Casting / OEM Numbers: N-6542 N-6673 21-001 21-002 BF-PIV-KIT 47-1052

Compatible Units: Stanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet Doors

Critical Dimensions & Spec: 3/8" & 7/16" diameter nylon/steel pivot sleeves; 1/4" spring-loaded top guide roller; heavy-gauge steel bottom jamb bracket

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Pre-Order Dimensional Verification Checklist

OEM Cross-Reference & Stamped Casting Number Table

Use this cross-reference table to confirm that the number stamped or printed on your original hardware or circuit board corresponds to SpecFoundry SKU SF-WIN-112:

Stamped / OEM Part Number Manufacturer / System Brand Compatible Models & Years SpecFoundry Replacement SKU
N-6542Prime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)
N-6673Prime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)
21-001Prime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)
21-002Prime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)
BF-PIV-KITPrime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)
47-1052Prime-Line / Stanley / MonarchStanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet DoorsDirect Match (SF-WIN-112)

Common Failure Symptoms Solved by SF-WIN-112

Technicians and property owners typically replace N-6542 when experiencing one or more of the following failure modes:

  • Bi-fold closet door pops out of top track when opened
  • Bottom threaded pivot pin stripped or collapsed through steel bracket
  • Split nylon bushing in top door corner hole

Step-by-Step Dimensional Verification & Installation Notes

Lift bi-fold panels out of floor bracket, tap old corner bushings out, press new top spring pivot and bottom threaded adjust pivot into 3/8" or 7/16" bores, and set height in floor bracket.

Related Technical Guide: Truth Hardware Casement Window Operator Stamped Casting Number Identification Guide →

Frequently Asked Technical Questions (N-6542)

Where is the casting or OEM part number (N-6542 / N-6673 / 21-001) stamped on this part?

On Prime-Line / Stanley / Monarch assemblies, look for the stamped or die-cast numbers (N-6542, N-6673, 21-001, 21-002, BF-PIV-KIT, 47-1052) on the underside of the metal housing, along the link arm, on the stainless hinge track, or printed on the circuit board/valve label. Note that casting numbers identify the housing casting, so always confirm critical dimensions (3/8" & 7/16" diameter nylon/steel pivot sleeves; 1/4" spring-loaded top guide roller; heavy-gauge steel bottom jamb bracket) as well.

Does SpecFoundry SKU SF-WIN-112 directly replace OEM part N-6542 (N-6542, N-6673, 21-001, 21-002, BF-PIV-KIT, 47-1052)?

Yes. SF-WIN-112 is verified to match the mounting footprint, electrical/mechanical ratings, and dimensional envelope of Prime-Line / Stanley / Monarch N-6542, N-6673, 21-001, 21-002, BF-PIV-KIT, 47-1052 used on Stanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet Doors.

What measurements should I verify before ordering SF-WIN-112?

Before ordering, verify: (1) Stamped or OEM code matches one of N-6542, N-6673, 21-001, 21-002, BF-PIV-KIT, 47-1052; (2) Dimensional spec matches: 3/8" & 7/16" diameter nylon/steel pivot sleeves; 1/4" spring-loaded top guide roller; heavy-gauge steel bottom jamb bracket; and (3) Application matches: Stanley, Monarch, Benchmark, Johnson Hardware, and Legacy Steel/Wood Bi-Fold Closet Doors.

How fast does SF-WIN-112 ship and what payment methods are accepted?

SF-WIN-112 ships within 1–2 business days from our US warehouse network. Flat-rate US Ground shipping is $8.95, or FREE on orders of $150+. You can check out online immediately via PayPal, Venmo, Credit/Debit Card, or request an Instant Card Payment Link / Net-30 Commercial PO Invoice.

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